TY  - BOOK
AU  - Bolzano, Bernard
AU  - George, Rolf
TI  - Theory of science: with constant attention to earlier authors 
AV  - Q 175 B65
PY  - 1972///
CY  - Berkeley, Calif.
PB  - University of California
KW  - Ciencia -
KW  - Filosofía
ER  -