00309nam a22001097a 4500003000400000008004100004082001800045100002400063245005600087260004900143300000700192OSt240220b        |||||||| |||| 00| 0 eng d  aT631.41bS40T  aShiv Shankar Prasad  aTransformation and availabilty of nitrogen....soil.  aR.A.U., PusaDDept of Agril. Economicsc1983  a95