00509nam a22001457a 4500 230221b |||||||| |||| 00| 0 eng d National Science Library National Science Library 628.19(082.2)(4) K1.2 Conference on water pollution problems in Europe, held in Geneva 22 February to 03 March 1961 / United Nations, Geneva 1961 Geneva: United Nations, 1961 468p. Science Water pollution udc PR 47276 47276 0 0 udc 0 6281908224_K1 0 71973 NSL NSL GF/Rk-13/C-18/R-4 2004-07-22 0 628.19(082.2)(4) K1 191317 2023-06-26 00:00:00 2023-06-26 PR 0 0 udc 0 6281908224_K1 0 72051 NSL NSL GF/Rk-13/C-18/R-4 2004-07-22 0 628.19(082.2)(4) K1 188857 2023-06-26 00:00:00 2023-06-26 PR