00497nam a22001217a 4500008004100000040005500041080002700096245014600123260006100269300001500330650001700345653001300362230606b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  aR 016:631.84/(540)bL2  aNitrogen in Indian agriculture (1961-70): bA bibliography of N, NP, NK, NPK and other related factorsc/ European Nitrogen Service Programme  aNew Delhi: bEuropean Nitrogen Service Programme, c1972  axix, 466p.  aBibliography  aNitrogen