00886     2200265   4500001002100000005001500021035002000036008004100056245025800097260003900355300002700394020001500421084002100436082001500457650002200472990001400494990001400508990001400522990001400536990001400550990001400564990001400578990001400592990001400606INLIS00000000000133620180523110423  a0010-0317001334180523                           0        aBiological nitrogen fixation and sustainability of tropical agriculture : Proceedings of The Fourth International Conference of the African Association for Biological Nitrogen Fixation (AABNF), held at the International Institute of Tropical Agriculture  aNew York :bJohn Wiley Sons,c1992  axiv, 488 hlm. ;c24 cm  a0471935603  a589.901 33 Int b  a589.901 33  anitrogenpertanian  a300162995  a300163095  a162895412  a300163095  a300162995  a162895412  a300162995  a300163095  a162895412