(1)
BHATNAGAR, G. S.; SHARMA, G. L.; CHAPLOT, P. C. Long-Term Effed of Continuous Maize (Zea Mays) Wheat (Triticum Aestivum) Cropping System and Manuring on Soil Fertility and Stability in Crop Yield. Indian J Agri Sci 2013, 64 (12).