TY  - BOOK
AU  - Pledge,Humphrey Thomas
TI  - Science since 1500: a short history of mathematics, physics, chemistry, biology. 
T2  - Harper torchbooks,
U1  - 509 23
PY  - 1959///
CY  - New York
PB  - Harper
KW  - Science
KW  - History
N1  - First published in 1939 by H. Britannic M. Stationery Off; Includes bibliography
ER  -