Prepared for students, parents, teachers, counselors, and librarians, this reference guide provides descriptions of 399 majors offered at U.S. colleges and universities. The guide includes only those majors in which an associate, baccalaureate, master's, or doctoral level degree can be obtained. Majors are arranged alphabetically and descriptions for each entry include: level of degree offered; related and complementary majors; typical courses; needed abilities; and career possibilities. Appendices list major fields of study by discipline, cross-references for majors, and correlations of various occupations and majors. (LPT)