Dinilsony c ,jayakumar p and joseph n k(2011).Sand mining in the rivers Of Kozhikode district of Kerala- An overview proc. National seminar on‘Mining of river sand and its impacts on the environment”organized by CWC and CWRDM at Kozhikode during 18-19,201

Dinilsony c ,jayakumar p and joseph n k(2011).Sand mining in the rivers Of Kozhikode district of Kerala- An overview proc. National seminar on‘Mining of river sand and its impacts on the environment”organized by CWC and CWRDM at Kozhikode during 18-19,2011.