Alviar, N. (1969). An economic comparison between tractor-operated and carabao-cultivated rice farms.
Lua i Stíl Chicago (17ú heag.)Alviar, Nelly. An Economic Comparison Between Tractor-operated and Carabao-cultivated Rice Farms. 1969.
Lua MLA (9ú heag.)Alviar, Nelly. An Economic Comparison Between Tractor-operated and Carabao-cultivated Rice Farms. 1969.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.