TY  - BOOK
AU  - Werkmeister,W.H.
TI  - An introduction to critical thinking: a beginner's text in logic,
U1  - 160 
PY  - 1957///]
CY  - Lincoln, Neb.
PB  - Johnsen Pub. Co.
KW  - Logic
N1  - Includes index
ER  -