TY  - BOOK
AU  - Norton, Thomas H.
TI  - Utilization of atmospheric nitrogen
U1  - 665.824 
PY  - 1912///
CY  - Washington
PB  - Government Printing Office
KW  - Nitrogen Fixation
KW  - Agricultural Chemistry
KW  - Soil Fertility
N1  - Includes bibliographical references
ER  -