00554naa a2200181 a 450000100080000000500110000800800410001910000160006024501330007626000090020965000120021865000160023065300210024665300250026770000170029270000190030977300440032816049981995-06-27       1983    bl ---       0--  u    #d1 aHOPMANS, P.  aSymbiotic N2 fixation by legumes growing in pots. I. Fixation of 15N-labelled N2 and C2H2 reduction by Trifolium subterraneum L.  c1983  aMétodo  aNitrogênio  aAVALIACAO DE FBN  aLEGUMINOSA TEMPERADA1 aCHALK, P. M.1 aDOUGLAS, L. A.  tPlant Soilgv.74, n.3, p.325-332, 1983.