TY  - JA
AU  - Gutteridge,R.C.
TI  - The use of the leaf of nitrogen fixing trees as a source of nitrogen for maize
PY  - 1990///
KW  - Application rates
KW  - Nitrogen fixation
KW  - Zea mays
KW  - AGROVOC
N1  - Tables, references
T2  - Nitrogen Fixing Tree Research Reports
ER  -