00285nam a2200097Ia 4500008004100000082001600041100002900057245006000086260003300146300000800179140113s9999    xx            000 0 und d  a631.67   M0  a"Biswas, A.K., Et al�"  aWater Management for Acid lands in developing countries  a1980bPergaman PresscOxford  a252