Sustainable agriculture : issues, perspectives and prospects in semi arid Tropics : proceedings of the First International Symposium on Natural Resources Management for a Sustainable Agriculture, February 6-10, 1990, New Delhi. Vol. 1.

International Symposium on Natural Resources Management for a Sustainable Agriculture
Bok · Engelsk · 1990

Utgitt	New Delhi : Indian Society of Agronomy , [1990]
Omfang	492 s.