3 J 
STATE OF ILLINOIS 
DEPARTMENT OF REGISTRATION AND EDUCATION & 
NATURAL HISTORY SURVEY DIVISION 
The Use of Factor Analysis in Modeling 
Natural Communities of Plants and Animals 
Robert W. Poole 
-- 2.15 —p— 2.75 
Illinois Natural History Survey 
Biological Notes No. 72 
Urbana, Illinois February, 197] BIOLOGY LIBRARY 
101 BURRILL HALL 4 1971 
tN 16 4077 JN 19 
THE LIBRARY OF THE 
