Science Microbiology 41,799 45,246 36,747 38,768 Pharmacology 50,720 51,815 47,112 48,901 Ecology 41,404 43,631 33,881 40,998 Zoology 52,340 54,973 39,567 36,452 Physiology 47,000 48,558 41,957 44,178 Entomology 46,979 48,036 36,857 41,512
Source: Office of Personnel Management * As of Sept. 30, 1990