00314nam a2200121Ia 4500008004100000100005500041245002600096250001100122260003200133260000900165300000800174650001000182221231s9999    xx            000 0 und d  aGeetha Balakrishna R., Lakshminarayana Bhatta. K.G 0aEnvironmental Studies  a3rd Ed  bSri Manjunatha Publications  c2008  a237  acivil