Improving efficiency of nitrogen and phosphorus fertilizers
Jain, H.K.
Improving efficiency of nitrogen and phosphorus fertilizers - New Delhi 1980 - 1-24 p. - Fertilizers Indian Agricultural Research Institute. Research Bulletin. 12 .
Improving efficiency of nitrogen and phosphorus fertilizers - New Delhi 1980 - 1-24 p. - Fertilizers Indian Agricultural Research Institute. Research Bulletin. 12 .