TY  - BOOK
AU  - Bernal,John Desmond
TI  - Science in history  Vol.3
AV  - CB151.B4 Vol.3 
PY  - 1969///
CY  - London
PB  - : C. A. Watts and Company
KW  - Science and civilization
KW  -  Civilization
KW  - History
N1  - Includes bibliography


ER  -