National Council of Applied Economic Research. (1962). Techno-economic survey of Kerala. National Council of Applied Economic Research.
Dyfyniad Arddull ChicagoNational Council of Applied Economic Research. Techno-economic Survey of Kerala. New Delhi: National Council of Applied Economic Research, 1962.
Dyfyniad MLANational Council of Applied Economic Research. Techno-economic Survey of Kerala. National Council of Applied Economic Research, 1962.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.