SHARMA, S. N., SINGH, S., & PRASAD, R. (2014). Effect of crop residue incorporation on the relative efficiency of diammonium phosphate and mussoorie rock phosphate in rice (Oryza sativa)- wheat (Triticum aestivum) cropping system. The Indian Journal of Agricultural Sciences, 71(2). https://epubs.icar.org.in/index.php/IJAgS/article/view/39515