TY  - BOOK
AU  - Browning J A
ED  - Iowa State University of Science and Technology. Agricultural and Home Economics Experiment Stattion
TI  - Special report: Disease consequences of intensive and extensive culture of field crops
U1  - 630.72(777) 
PY  - 1969///
CY  - Iowa
PB  - Iowa State University
KW  - Agriculture
KW  - Disease
KW  - Field crops
KW  - Study and teaching
ER  -