Tiwari, R P जल संसाधन एवं पर्यावरण नियंत्रण: Water resources and environmental management Jal sansaadhan evam paryaavaran nirantrad: Water resources and environmental management - New Delhi: A. P. H. Publishing House, 2000 - 363p. ISBN: 81-7648-054-1 Subjects--Topical Terms: Environmental science Subjects--Index Terms: Pollution Universal Decimal Class. No.: 504.4 / P0