TY  - BOOK
AU  - Laer, P. Henry Van
TI  - Philosophy of science [pt.1]: an introduction to some general aspects of science
U1  - 105.1 
PY  - 1963///
CY  - Pittsburgh
PB  - Duquesne University
KW  - Duquesne studies
N1  - Contents: pt.1. Science in general
ER  -