Punjab (India). Economic and Statistical Organisation. (1973). Economics of tractor cultivation and economics of production and cultivation practices of high yielding varieties of wheat, maize (hybrid), and paddy in Punjab: Report. Economic and Statistical Organisation.
Citação do estilo Chicago (17ª ed.)Punjab (India). Economic and Statistical Organisation. Economics of Tractor Cultivation and Economics of Production and Cultivation Practices of High Yielding Varieties of Wheat, Maize (hybrid), and Paddy in Punjab: Report. Chandigarh: Economic and Statistical Organisation, 1973.
Citação MLA (8ª ed.)Punjab (India). Economic and Statistical Organisation. Economics of Tractor Cultivation and Economics of Production and Cultivation Practices of High Yielding Varieties of Wheat, Maize (hybrid), and Paddy in Punjab: Report. Economic and Statistical Organisation, 1973.