na INLIS000000000002657 I 0010-0317002655 Deteksi dini penyakit akibat kerja = Early detection of occupational diseases World Health Organization Jakarta : EGC 1993 xi, 280 hlm. 25 cm 9794481947 616.980 3 Wor d 616.980 3 occupational diseasesoccupational medicine 065204211 065404211 065404211 065204211 065204211 065404211