TY  - BOOK
AU  - Mishustin, E. N. 
AU  - Shil'Nikova, V. K.
TI  - Biological fixation of atmospheric nitrogen  
PY  - 1971///
CY  - London
PB  - Macmillan 
KW  - Nitrogen FertilizersAmmonium FixationSoil Sciences
ER  -