00534nam a2200193Ia 450000500170000000800410001702000180005803500090007604100080008508200120009310000300010524500390013525000080017426000450018230000070022750000090023450500570024365000400030020260808125455.0260808s9999||||xx |||||||||||||| ||und||  a92-4-154216-0  a5754  aENG  a616.314  aWorld Health Organization 0aOral health surveysbbasic methods  a3rd  aGenevabWorld Health Oraganizationc1987  a53  aGift  aWHO, international health, pathology, global disease  aWHObPathology -- Internal medicine