TY - BOOK AU - Jekel,JF AU - Katz,DL AU - Elmore,JG TI - Epidemiology, biostatistics, and preventive medicine SN - 0721690793 PY - 2001/// CY - Philadelphia PB - Saunders, KW - Epidemiology KW - Biometry KW - Preventive medicine KW - Prevention and control KW - Medical statistics ER -