TY - BOOK AU - Santhanam, Ramasamy AU - Velayutham, P. AU - Jegatheesan, G. TI - A manual of freshwater ecology: an aspect of fishery environment SN - 8170350549 AV - QH541.5 .F7536 1989 PY - 1989/// CY - Delhi PB - Daya Publishing House KW - Freshwater ecology KW - Fisheries KW - Environmental aspects ER -