00381nam a2200121Ia 4500008004100000082002400041100002900065245004600094260003600140300001000176490002900186650004400215140113s9999    xx            000 0 und d  a631.461.5:575.82 L7  a" Hollaender, Alexander"  aGenetic engineering for nitrogen fixation  b"New york : Plenum press, 1977"  a538p.  abasic life sciences. v.9  aGenetic engineering ; Nitrogen fixation