TY - GEN AU - Glanville, H.de AU - Schilling, R.S.F AU - Wood, C.H TI - Occupational health : : a manual for health workers in developing countries U1 - 613.62 OCC PY - 1979/// CY - Nairobi : PB - African Medical and Research Foundation KW - Occupational health N1 - Includes index ER -