TY  - GEN
AU  - Sparks, Donald L
TI  - Advances in AGronomy Vol 79
T2  - 79
SN  - 0120007975
U1  - 630.685 AGR.79 
CY  - California, Academic press
KW  - Soil Quality, Nitrogen Fluxes, Subterranean clover, Hevea Brasiliensis, Seleniferous Soils, Nitrogen Management
ER  -