Zisa, Robert P. <br/><br/>
Establishment and early growth of conifers on compact soils in urban areas / 
by Robert P. Zisa, Howard G. Halverson and Benjamin B. Stout 
 - Washington, D.C. :  U. S. Govt. Printing Office,  1979 
 - 8 p. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Soil conservation--United States
<br/><br/><label>Dewey Class. No.: </label>631.450973