00605nam a2200193Ia 450000500170000000800410001702000180005803500090007604100080008508200110009310000150010424501120011926000450023130000110027650000090028750500570029665000400035370000180039320260808125438.0260808s9999||||xx |||||||||||||| ||und||  a92-890-1103-3  a4981  aENG  a616.24  aFlorey, C. 0aMethods for cohort studies of chronic air flow limitationbWHO regional publication european series no - 12  aGenevabWorld Health Oraganizationc1982  avi+134  aGift  aWHO, international health, pathology, global disease  aWHObPathology -- Internal medicine  aLeeder, S. R.