[ 发表于: Pollution ]
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Economic aspects of environmental pollution in India
1984
Vakil, Arun C.
National Agricultural Library - United States of America
Proceedings of the National Conference on River Pollution and Human Health, February 20-21, 1983 | River pollution and human health | River ecology and human health
1984
Ambasht, R. S. | Tripathi, B. D.
National Agricultural Library - United States of America