TY  - GEN
AU  - Shepherd Walter
TI  - Science marches on: the origin, progress and significance of scientific knowledge 
AV  - Q125  
PY  - 1939///
CY  - London
PB  - G.G. Harrap & co. ltd.
KW  - Science
KW  - History
N1  - "First published 1939."
ER  -