TY  - BOOK
AU  - Ancona, Mberto d' ,
TI  - The struggle for exixtance
U1  - 574.5 
PY  - 1954///
CY  - Leiden
PB  - E. J. Brill
KW  - Zoology
KW  - Ecology
KW  - Biomathematics
N1  - Includes bibliographical references ( p. [260]-274.)
ER  -