Lundgren, Allen L. <br/><br/>
The extent and characteristics of low productivity aspen areas in Minnesota / 
by Allen L. Lundgren and Jerold L. Hahn 
 - [S.l.] :  U.S. Government Printing Office,  1978 
 - 24 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Surplus agricultural commodities--United States
<br/><br/><label>Dewey Class. No.: </label>662.66920973