This newly designed field guide features descriptions of 524 species of butterflies. One hundred color photographs as well as 348 color range maps accompany the species descriptions. The 541 exquisite color paintings clearly show even the most minute field marks. Introductory chapters include information on butterfly gardening, habitats, and conservation.

Rivers of the United States, Volume 5, Part B: Gulf ofMexico is an essential volume for studying water-related issuesof the region. * Provides authoritative coverage by a world-renowned expert onlimnology. * Includes information on the impact of pollution and developmenton the health of rivers, and how conservation and reclamationefforts can repair past damage.

Natural history - Texas, table of contents, index.