Jenny, Hans
Effect of climate and cultivation on nitrogen and organic matter reserves in Indian soils - New Delhi I C A R 1967 - 125
Soils and climate
Soils--Nitrogen content
631.4/JEN
Effect of climate and cultivation on nitrogen and organic matter reserves in Indian soils - New Delhi I C A R 1967 - 125
Soils and climate
Soils--Nitrogen content
631.4/JEN