TY  - BOOK
AU  - Lorenzen,Paul
AU  - Crosson,Frederick J
TI  - Formal logic
U1  - 164 
PY  - 1965///
CY  - Dordrecht
PB  - D. Reidel Pub.
KW  - Philosophy
KW  - Logic
N1  - Includes bibliographical references and index
ER  -