TY  - BOOK
TI  - Teacher's study guide on the biology of human populations
SN  - 9231012797
PY  - 1975///
CY  - Paris
PB  - Unesco Press
KW  - Human biology
KW  - Study and teaching (Secondary)
KW  - Collected works
KW  - Human ecology
KW  - Population
KW  - Biology
ER  -