TY  - GEN
AU  - Sparks, Donald L
TI  - Advances in Agronomy Vol 70
T2  - 70
SN  - 0120007703
U1  - 630.685 AGR.70 
CY  - California, Academic Press
KW  - Desertified Land, Carbon sequestration, Human nutrition,Nitrogen cycling, Methane Emissions, Organic farming
ER  -