共 6 条
[1]
Pathak, Sharma, Soils of Uttar Pradesh and their management, Soils of India and Their Management, pp. 409-410, (1985)
[2]
Mittal, Dhawan, Research manual on energy requirements in agricultural sector. Coordinating Cell, All India Coordinated Research Project on Energy Requirements in Agricultural Sector, (1988)
[3]
Mittal, Dhawan, Agric., Ecosyst. Envir., 25, (1989)
[4]
Parikh, Energy and agriculture interaction, Food for All in a Sustainable World, (1981)
[5]
Singh, Mittal, Singh, Bakshi, Appl. Energy, 30, (1988)
[6]
Pandey, Singh, Agric. Syst., 13, (1984)