Ornamental tree and shrub improvement the forester's role :  Proce edings of the sixth Central States forest tree improvement conference, October 16-18, 1968 / 
editor: David T Funk. 
 - Carbondale :  Published by North Central Forest Experiment Station , St Paul, Ministry and Department of Forestry ,  1968. 
 - 62 p. :  ill. ;  28 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trees--Congresses.
<br/><br/><label>Dewey Class. No.: </label>P 634.97 C46