00795nam a2200205Ia 4500 CTU_15450 210402s9999 xx 000 0 und d 108df 614.4 M167 Brian MacMahon Epidemiology: Principles and methods Brian MacMahon, Dimitrios Trichopoulos Boston Little Brown 1996 The book progresses logically from introductory comments to concepts of cause, grouping of ill persons and classification of diseases, measures of disease frequency, strategies of epidemiology, and discussions of time, place, and person. epidemiologic methods,epidemiology Minh, 970404 Trung tâm Học liệu Trường Đại học Cần Thơ