Bist, Sujata पर्यावरण, प्रदुषण और इक्कीसवीन सदी Paryavarna pradooshan aur ikkisavin sadi - New Delhi: Takshila Prakashan, 1992 - 126p. Subjects--Topical Terms: Environmental science Subjects--Index Terms: Pollution Universal Decimal Class. No.: 504.054 / N2