00447nam a22001457a 4500 OSt 260601b |||||||| |||| 00| 0 eng d 631.84 S43S nesar Ahmad Siddiqui Studies on Volatilization Losses of Ammonia From Nitrogenous Fertilizers Applied to Calcareous soils of North Bihar RPCAU 1977 84 M.Sc. Slil Science and Agril Chemistry ddc T 51126 51126