TY  - GEN
AU  - Hardy R W F, Gibson A H
TI  - Treatise on dinitrogen fixation: section IV:agronomyand ecology
SN  - 047102343
U1  - 589.  041  33 HAR.04 
CY  - Newyork, John Wiley & Sons INC
KW  - Nitrogen-fixation; micro-organisms-nitrogen fixing;legumes
ER  -