TY  - BOOK
AU  - Danhof Clarence H
TI  - Change in agriculture :  The Northern United States   
SN  - 674107705
U1  - X9(J).71.M70<--M20, K9 
PY  - 1969///
CY  - Massachusetts
PB  - HUP          
KW  - Agricultural Industry
ER  -