TY  - BOOK
AU  - Mason,S.F.
TI  - Main currents of scientific thought: a history of the sciences 
U1  - 509 23
PY  - 1953/// [ Printing 1955]
CY  - New York
PB  - Abelard-Schuman, 
KW  - Science
KW  - History
N1  - London ed. (Routledge & Paul) has title: A history of the sciences; Includes bibliography and Index
ER  -