TY  - BOOK
AU  - Lundgren,Allen L.
AU  - Hahn,Jerold L.
ED  - United States.
TI  - The extent and characteristics of low productivity aspen areas in Minnesota
U1  -  662.66920973 
PY  - 1978///
CY  - [S.l.]
PB  - U.S. Government Printing Office
KW  - Surplus agricultural commodities
KW  - United States
ER  -