Haaker, H.B.C.M.  <br/><br/>
Aerobic nitrogen fixation in Azotobacter vinelandii  (Book) 

 - Wageningen  Landbouwhogeschool te Wageningen  1977 
 - 96 p.  24 cm. 
<br/><br/><label>Universal Decimal Class. No.: </label>576.851.1:576.8.095.21(043) HAA  / 16018