TY  - BOOK
ED  - Iowa State College of Agriculture and Mechanic Arts.
TI  - Design of Agronomic Experiments for Plots Differentiated in Fertility by Past Treatments
T2  - Research Bulletin
U1  - 73 630.7 
PY  - 1937///
CY  - Iowa
PB  - [s.n.]
KW  - Administrative report
ER  -