00612nam a2200193 a 450000100080000000500110000800800410001902000180006010000190007824500710009726000430016830000100021150001030022165000160032465300140034065300250035465300200037970000190039913066392003-08-04       1997    bl uuuu     u01u1 u    #d  a1-86451-364-71 aKENNEDY, I. R.  aBiological Nitrogen FixationbThe Global Challenge & Future Needs.  aNew York: Rockefeller Foundationc1997  a83 p.  aPaper, discussed at The Rockefeller Foundation Bellagio Conference Centre, Lake Como, 1997, Italy.  aNitrogênio  aCongresso  aFixação biológica  aMudança global1 aCOCKING, E. C.