TY  - BOOK
AU  - Sparks,Donald L.
TI  - Advances in agronomy.
T2  - Advances in agronomy
SN  - 9780124072473
PY  - 1984///-
CY  - Boston
PB  - Elsevier/Academic Press
KW  - Agriculture
KW  - Research
N1  - Includes bibliographical references and index
ER  -