00566nam a2200181Ia 450000500170000000800410001702000180005803500090007604100080008508200120009310000300010524501060013526000530024130000080029450000090030250500450031165000280035620260808125504.0260808s9999||||xx |||||||||||||| ||und||  a92-4-154288-8  a6139  aENG  a547.562  aWorld Health Organization 0aIPCS (Environmental health criteria no - 088)bpolychlorinated dibenzo-para-dioxins and dibenzofurans  aGenevabUNEP and World Health Organizationc1989  a409  aGift  aIPCS, chemical safety, organic chemicals  aIPCSbOrganic chemistry