TY  - BOOK
AU  - Unkovich, Murray
TI  - Measuring plant-associated nitrogen fixation in agricultural systems
PY  - 2008///
CY  - Canberra
PB  - The Australian Centre for International  Agricultural Research Publications
KW  - Nitrogen
KW  -  Fixation
KW  - Nitrogen-sixing plants
N1  - Includes bibliographical references (p.223 - 240 )
ER  -