Critchfield, William Burke. <br/><br/>
Geographic distribution of the pines of the world / 
by William B. Critchfield and Elbert L. Little, Jr. 
 - Washington, D.C. :  U.S. Dept. of Agriculture, Forest Service,  1966. 
 - v, 97 p. :  61 col. maps ;  30 cm. 
 - Miscellaneous publication / United States Department of Agriculture ;  no. 991 .
 - Miscellaneous publication (United States. Department of Agriculture) ;  no. 991. .
<br/><br/> Cover title.  Includes index. 
<br/><br/>Bibliography: p. 21-29. 
<br/><br/><label>LCCN: </label>agr66000366  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pine--Geographical distribution.
<br/><br/><label>LC Class. No.: </label>S21  / .A46 no. 991 
<br/><br/><label>Dewey Class. No.: </label>634.9/751 
<br/><br/><label>National Agricultural Library Call No.: </label>1  / Ag84M no.991