00564nam a2200181Ia 450000500170000000800410001702000180005803500090007604100080008508200120009310000300010524500790013526000450021430000130025950000090027250500630028165000380034420260808125457.0260808s9999||||xx |||||||||||||| ||und||  a92-4-156101-7  a5812  aENG  a615.477  aWorld Health Organization 0aBarrier contraceptives and spermicidesbtheir role in family planning care  aGenevabWorld Health Oraganizationc1987  avii + 80  aGift  aWHO, pharmaceutical standards, international pharmacopoeia  aWHObPharmacology -- Therapeutics