TY  - BOOK
AU  - Shepherd,Walter
TI  - A new survey of science
U1  - 509 SHE 
PY  - 1939///
CY  - London
PB  - George G Harpar and company
KW  - Science- History
KW  - Science survey
N1  - A revised and enlarged edition of  Science Marches on
ER  -