TY  - BOOK
AU  - Pledge,H.T.
TI  - SCIENCE SINCE 1500: :A short History of mathematics,Physics,chemistry,biology
U1  - 509 PLE 
PY  - 1959///
CY  - Newyork
PB  - :Harper & Brothers 
KW  - Natural science and mathematics
KW  - Sceince and pre-sceince
ER  -