ഗോപിനാഥൻ നായർ,പി.എസ് (Gopinathan Nair,P.S)
ജലം ജീവജലം (Jalam Jeeva Jalam) - Thrissur: Kerala Shasthra Sahithya Parishathu, 2006. - 312p..
9798188033989
Water pollution
River water
Water quality
Water resource-Kerala-India
M333.91 / GOP/J
ജലം ജീവജലം (Jalam Jeeva Jalam) - Thrissur: Kerala Shasthra Sahithya Parishathu, 2006. - 312p..
9798188033989
Water pollution
River water
Water quality
Water resource-Kerala-India
M333.91 / GOP/J