00318nam a2200121Ia 4500008004100000020001800041041000800059082001800067100001500085245004500100260004300145300000800188211209s1996    xx            000 0 und d  a81-224-0807-9  aeng  a628.1 DUG/SON  aDUGGAL K N  aELEMENTS OF WATER RESOURCES ENGINEERING   aNEW DELHIbNEW AGE INTERNATIONALc1996  a588