Land use borad. (1996). Water shed atlas: Valapattanam river. Kerala State Land Use Board.
Chicago Edition CitationLand use borad. Water Shed Atlas: Valapattanam River. Thiruvananthapuram: Kerala State Land Use Board, 1996.
MLA Edition CitationLand use borad. Water Shed Atlas: Valapattanam River. Kerala State Land Use Board, 1996.
Warning: These citations may not always be 100% accurate.