00551nam a22001457a 4500 230606b |||||||| |||| 00| 0 eng d National Science Library National Science Library R 016:631.84/(540) L2 Nitrogen in Indian agriculture (1961-70): A bibliography of N, NP, NK, NPK and other related factors / European Nitrogen Service Programme New Delhi: European Nitrogen Service Programme, 1972 xix, 466p. Bibliography Nitrogen udc REF 40029 40029 0 0 udc 0 R_01663184540_L2 0 REF 60065 NSL NSL GF/RK-26/C-2/R-4 1972-12-02 0 R 016:631.84/(540) L2 43352 2023-06-06 00:00:00 1972-12-02 REF