TY  - BOOK
AU  - HARDY, R W F
TI  - Treatise on dinitrogen fixation. Section 4. Agronomy and ecology
U1  - 631.461.4 
PY  - 1977///
CY  - New York
PB  - John Wiley
KW  - Dinitrogen fixation
KW  - Legume symbiosis
KW  - Nitrogen deficiency
ER  -