TY  - BOOK
AU  - Pirie, N. W.
AU  - Cragg, J. B.,
ED  - Institute of Biology.
TI  - The numbers of man and animals
AV  - HB881 .I65
U1  - 591.52 
PY  - 1955///
CY  - Edinburgh
PB  - Oliver and Boyd
KW  - Population
N1  - "A record of the symposium held on 24 and 25 September 1954 by the Institute of Biology."; Includes bibliographical references
ER  -