TY  - BOOK
AU  - Gregorich, Barbara
TI  - Logical logic grades 7-12 / 
AV  - BC 177 .G821 1985
U1  - TR 160.7 
KW  - Logic
KW  - Study and teaching (Elementary)
KW  - Thought and Thinking
KW  - 3. Cognition in children
KW  - Title
N1  - Faculty
ER  -