00490nam a2200181Ia 4500008004100000020001600041082001800057100002600075245004600101260003300147300000800180650002300188650001800211653002400229653002200253700001800275700001500293170901s1977    xx            000 0 und d  a030636509 X  a581.133bH74G  aHollaender, Alexander 0aGenetic Engineering For Nitrogen Fixation  aNew YorkbPlemum Pressc1977  a538  aBotanical sciences  aPure Sciences  aGenetic engineering  aNitrogen fixation  aBurris, R. H.  aDay, P. R.