TY  - BOOK
AU  - Sparks, Donald L.
TI  - Advances in Agronomy / 
SN  - 9780123748195
U1  - 631.5 
PY  - 2009///
CY  - .- London
PB  - : Academic Press
KW  - Technology (Applied Sciences)
KW  - Agriculture and Related Technologies
KW  - Agronomy
KW  - Research
ER  -