For more than 30 years, soil testing has been widely used as a basis for determining lime and fertilizer needs. Today, a number of procedures are used for determining everything from soil pH and lime requirement, to the level of extractable nutrient elements. And as the number of cropped fields being tested increases, more and more farmers and growers will come to rely on soil test results. But if soil testing is to be an effective means of evaluating the fertility status of soils, standardization of methodology is essential. No single test is appropriate for all soils. Soil Analysis Handbook of Reference Methods is a standard laboratory technique manual for the most commonly used soil analysis procedures. First published in 1974, this Handbook has changed over the years to reflect evolving needs. New test methods and modifications have been added, as well as new sections on nitrate, heavy metals, and quality assurance plans for agricultural testing laboratories. Compiled by the Soil and Plant Analysis Council, this latest edition of Soil Analysis Handbook of Reference Methods also addresses the major methods for managing plant nutrition currently in use in the United States and other parts of the world. For soil scientists, farmers, growers, or anyone with an interest in the environment, this reference will prove an invaluable guide to standard methods for soil testing well into the future. Features

The second edition of this guide to basic reference sources in the social sciences contains nearly three times as many entries, - 2,200 - as the earlier edition and also includes several other notable enhancements. In addition to revising and substantially enlarging the chapters on reference sources, Li has further increased the usefulness of this reference volume by adding a chapter on geography and one on business that is distinct from economies. Since the publication of the first edition, there have been two obvious developments in information storage and retrieval: the rapid development of online databases and the development of CD-ROM. Instead of devoting a separate chapter to these developments, the book incorporates online databases, CD-ROM and other forms of data sources into the text. In addition, there is a brief introduction to these developments. Although the general deadline for inclusion in the volume was December 1988, quite a few titles published in 1989 are included.

For those who teach students in psychology, education, and the social sciences, the Handbook of Demonstrations and Activities in the Teaching of Psychology, Second Edition provides practical applications and rich sources of ideas. Revised to include a wealth of new material (56% of the articles are new), these invaluable reference books contain the collective experience of teachers who have successfully dealt with students' difficulty in mastering important concepts about human behavior. Each volume features a table that lists the articles and identifies the primary and secondary courses in which readers can use each demonstration. Additionally, the subject index facilitates retrieval of articles according to topical headings, and the appendix notes the source as it originally appeared in Teaching of Psychology, the official journal of the Society for the Teaching of Psychology, Division Two of the American Psychological Association. Volume I consists of 97 articles about strategies for teaching introductory psychology, statistics, research methods, and the history of psychology classes. Divided into four sections (one for each specialty), the book suggests ways to stimulate interest, promote participation, grasp psychological terminology, and master necessary scientific skills.

Libraries today provide a wider variety of services, collections, and tools than at any time in the past. This book explores how reference librarianship is changing to continue to help users find information they need in this shifting environment.

Electronics Engineer's Reference Book, 4th Edition is a reference book for electronic engineers that reviews the knowledge and techniques in electronics engineering and covers topics ranging from basics to materials and components, devices, circuits, measurements, and applications. This edition is comprised of 27 chapters; the first of which presents general information on electronics engineering, including terminology, mathematical equations, mathematical signs and symbols, and Greek alphabet and symbols. Attention then turns to the history of electronics; electromagnetic and nuclear radiation; the influence of the ionosphere and the troposphere on the propagation of radio waves; and basic electronic circuits. The reader is also introduced to devices such as electron valves and tubes, integrated circuits, and solid-state devices. The remaining chapters focus on other areas of electronics engineering, including sound and video recording; electronic music and radio astronomy; and applications of electronics in weather forecasting, space exploration, and education. This book will be of value to electronics engineers and professionals in other engineering disciplines, as well as to scientists, students, management personnel, educators, and readers with a general interest in electronics and their applications.

Interdisciplinary Collaboration calls attention to a serious need to study the problems and processes of interdisciplinary inquiry, to reflect on the current state of scientific knowledge regarding interdisciplinary collaboration, and to encourage research that studies interdisciplinary cognition in relation to the ecological contexts in which it occurs. It contains reflections and research on interdisciplinarity found in a number of different contexts by practitioners and scientists from a number of disciplines and several chapters represent attempts by cognitive scientists to look critically at the cognitive science enterprise itself. Representing all of the seven disciplines listed in the official logo of the Cognitive Science Society and its journal--anthropology, artificial intelligence, education, linguistics, neuroscience, philosophy, and psychology--this book is divided into three parts: *Part I sets the stage by providing three broad overviews of literature and theory on interdisciplinary research and education. *Part II examines varied forms of interdisciplinarity in situ rather than the more traditional macrolevel interview or survey approaches to studying group work. *Part III consists of noted cognitive scientists who reflect on their experiences and turn the analytical lenses of their own disciplines to the critical examination of cognitive science itself as a case study in interdisciplinary collaboration. Interdisciplinary Collaboration is intended for scholars at the graduate level and beyond in cognitive science and education.