00474nam a2200181Ia 4500008004100000041001200041082001200053082001100065100001800076100001100094245005200105260001200157260004800169260000900217300001500226365002500241650002600266150909s9999    xx            000 0 und d  aEnglish  a 628 .5  bQUA/WA  aQuano E A R    eEditor  aWater pollution control in developing countries  aBangkok  bInternational Conference on Water Pollution  c1978  a744  Pages  aUSD.130.00            aUnder developed areas