TY  - BOOK
AU  - Ruby,Lionel
AU  - Yarber,Robert E
TI  - The art of making sense: a guide to logical thinking
SN  - 0397473044
AV  - BC108 .R77 1968
U1  - 160 
PY  - 1968///]
CY  - Philadelphia
PB  - Lippincott
KW  - Logic
ER  -