Water pollution : conservation and managemen edited by A. K. Sinha, P. N. Vishwanathan and Ram Boojh - Nainital Gyanodaya Prakashan 1989 - 378p.; 26cm. ISBN: 818509616X Subjects--Topical Terms: Water-PollutionGanga Action Plant Dewey Class. No.: 628.168 / SIN