00619nam a22001457a 4500 230427b |||||||| |||| 00| 0 eng d National Science Library National Science Library 504.3.06(082.2) M2 Biological indicators and indices of environmental pollution: / Proceedings of the workshop held at Osmania University, Hyderabad, India during 21-23 September, 1981 under a WHO grant New Delhi: Central Board for the Prevention and Control of Water Pollution, 1982 209p. Science Zafar, A R (Ed.) udc PR 24250 24250 0 0 udc 0 5043060822_M2 0 35618 NSL NSL GF/Rk-5/C-21/R-4 1984-02-14 0 504.3.06(082.2) M2 103886 2023-04-27 00:00:00 1984-02-14 PR