TY  - BOOK
AU  - Marx,Robert E.
AU  - Birkhead,James W.
TI  - Hay harvesting methods and costs,
T2  - U. S. Dept. of Agriculture. Circular
AV  - SB198 .M45
PY  - 1951///
CY  - Washington
PB  - [U. S. Govt. Print. Off.]
KW  - Hay
KW  - Harvesting
KW  - Cost
N1  - Cover title
ER  -