National Council of Applied Economic Research. (1980). Implications of tractorisation for farm employment, productivity, and income. National Council of Applied Economic Research.
Dyfyniad Arddull ChicagoNational Council of Applied Economic Research. Implications of Tractorisation for Farm Employment, Productivity, and Income. New Delhi: National Council of Applied Economic Research, 1980.
Dyfyniad MLANational Council of Applied Economic Research. Implications of Tractorisation for Farm Employment, Productivity, and Income. National Council of Applied Economic Research, 1980.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.