TY  - BOOK
AU  - Sparks, Donald L.
TI  - Advances in agronomy: Vol 117
SN  - 9780123942784 (hbk)
U1  - 630  SPA/AD.117   
PY  - 2012///
CY  - Amsterdam
PB  - Elsevier
KW  - Agronomy
ER  -