NPK in Indian agriculture (1971--1975) : a bibliography of nitrogen, phosphorus, potassium and related factors in crops, soils, fertilisers and manures
TANDON, H. L. S
NPK in Indian agriculture (1971--1975) : a bibliography of nitrogen, phosphorus, potassium and related factors in crops, soils, fertilisers and manures - 1978 - 797p
FERTILIZERS AND MANURES -- BIBLIOGRAPHY
FERTILIZERS AND MANURES -- BIBLIOGRAPHY
016.631 8 E80N
NPK in Indian agriculture (1971--1975) : a bibliography of nitrogen, phosphorus, potassium and related factors in crops, soils, fertilisers and manures - 1978 - 797p
FERTILIZERS AND MANURES -- BIBLIOGRAPHY
FERTILIZERS AND MANURES -- BIBLIOGRAPHY
016.631 8 E80N