00448nam a2200169Ia 4500 210210b1999 xxu||||| |||| 00| 0 eng d 81 219 1681 X 574.5 VERC VERMA (P S) Concepts of ecology: environmental biology. ND S. Chand & Co. Ltd. 1999 vii,264 Ecology environmental biology Ecology AGARWAL (V K). 055566 103044 103044 0 0 0 0 Biology AL AL Biology 2021-02-17 65.00 2 574.5 VERC 055566 2026-03-31 2025-12-02 09:36:46 2025-12-02 2021-02-17 BK 0 0 0 0 Biology AL AL Biology 2021-02-17 65.00 2 574.5 VERC 055567 2024-02-22 00:00:00 2024-02-21 2021-02-17 BK