(1997). Land resource based perspective plan for 2020 AD. Kerala State Land Use Board.
Chicago-stil citatLand Resource Based Perspective Plan for 2020 AD. Thiruvananthapuram: Kerala State Land Use Board, 1997.
MLA-referensLand Resource Based Perspective Plan for 2020 AD. Kerala State Land Use Board, 1997.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.