TY  - BOOK
AU  - Mason, Otis Tufton
TI  - The origins of invention: a study of industry among primitive people 
AV  - T 32 M3
PY  - 1966///
CY  - Cambridge
PB  - The M.I.T. Press
KW  - Invenciones
KW  - Industrias primitivas
ER  -