Guide to the check sheet for IBP areas including a classification of vegetation for general purposes 
Compiled by G. F. Peterken 
 - Oxford  Blackwell Scientific Publications  1967[reprinted 1970] 
 - x,133p.; 21cm.- 
 - IBP handbook;no.4 .
<br/><br/><label>Dewey Class. No.: </label>574.5  / PRT