2609 83 10 BPLP Primary Author mixed material SEMARANG Balai Pendidikan dan Latihan Pelayaran s.a Anonim Primary Author mixed material s.l Seafarers Harry Lundeberg School of Seamanship 1991 Fatique and Circadian Rhythm Anonim Primary Author mixed material s.l s.n s.a International Maritime Organization Primary Author mixed material 9789280112627 London International Maritime Organization 1990 Anonim Primary Author mixed material s.l s.n s.a Rescue and Water Safety Anonim Primary Author mixed material 0385063490 Washington The American Red Cross 1974 World Health Organization Primary Author mixed material 97992415804558 Geneva World Health Organization 2010 Departemen Perhubungan Primary Author mixed material jakarta Departemen Perhubungan 1980 International Chamber of Shipping Primary Author mixed material 1856090817 London Internationa Chamber of Shipping 1996 International Chamber of Shipping Primary Author mixed material 1856090264 London Internationa Chamber of Shipping 1988