TY  - BOOK
AU  - Margalef,Ramón.
TI  - Perspectives in ecological theory
T2  - Chicago series in biology [v. 1] 
U1  - 574.5  
PY  - 1968///]
CY  - Chicago
PB  - University of Chicago Press
KW  - Ecology.
N1  - Bibliography: p. 103-106.
ER  -