TY - BOOK ED - Unesco. TI - Teacher's study guide on the biology of human populations SN - 9231012789 (v. 1) AV - QP34.5 .T4 1975 U1 - 301.31 PY - 1975///- CY - Paris PB - Unesco Press KW - Human biology KW - Study and teaching (Secondary) KW - Human ecology KW - Population KW - Biology N1 - Issued also in French and Spanish; Bibliography: [1], p. 453-454; [2], p. 437-438; [1] Africa.--[2] Asia ER -