000 00293nam a2200121Ia 4500
008 170101s1979 xx 000 0 und d
082 _a574.95 SPR
100 _aSprent Janet I.
245 4 _aThe Biology of Nitrogen Fixing Organisms
260 _c1979
300 _a196 p.
942 _2ddc
_cB
999 _c664816
_d664816