TY  - BOOK
AU  - Ruggiero,Vincent Ryan
TI  - The art of thinking: a guide to critical and creative thought 
PY  - 1984///
CY  - Mandaluyong
PB  - Cacho Hermanos
KW  - Thought and thinking
KW  - Problems, exercises, etc
N1  - Include appendices, notes and index
ER  -