Sustainable agriculture :
Singh, R.P
Sustainable agriculture : Issues, perspectives and prospects in semi arid tropics / Ed. by R.P. Singh - New Delhi Indian Society of Agronomy 1990 - v, 492p;pbk
V.1
Economics
Agricultural economics
Sustainable development--Agriculture
Agriculture and state--India
631 / ISA
Sustainable agriculture : Issues, perspectives and prospects in semi arid tropics / Ed. by R.P. Singh - New Delhi Indian Society of Agronomy 1990 - v, 492p;pbk
V.1
Economics
Agricultural economics
Sustainable development--Agriculture
Agriculture and state--India
631 / ISA