Slotten (Univ. of Otago, New Zealand; Radio's Hidden Voice) "explores the changing character of science, medicine, and technology in the United States"; as well as key figures, institutions, and organizations responsible for major developments in those fields; and the concepts, practices, and processes underlying the changes. The 528 signed, alphabetically arranged, entries and subentries range in length from a single column (e.g., "4-H Club Movement") to 10-plus pages (e.g., "Abortion Debates and Science") and include current bibliographies and cross-references. Volume 2 contains a detailed index and topical guide. Essays cover such subjects as "Baby and Childcare" (by Benjamin Spock), the Dust Bowl, health insurance, Helen Keller, Mary Putnam Jacobi, and Edward O. Wilson. The longer composite articles incorporate subentries. For example, "Societies and Associations, Science" has seven subentries: "Local Societies, Nineteenth Century"; "National Societies, Mid- to Late Nineteenth Century"; "State Societies, Mid- to Late Nineteenth Century"; "Professional Societies, End of the Nineteenth Century"; "Professional Societies, Twentieth Century"; "Local Societies, Twentieth Century"; and "State and National Societies in the Twentieth Century." Although references within the body of the text redirect the reader from a commonly used term such as AIDS to the actual entry (e.g., "AIDS See HIV/AIDS"), the detailed index is more than adequate for entry location. VERDICT While part of the larger 12-volume The Oxford Encyclopedia of American History, this works well as a stand-alone work and will be a useful multidisciplinary work for science, social science, and technology students.—Laurie Selwyn, formerly with Grayson Cty. Law Lib., Sherman, TX