TY  - BOOK
AU  - Gubbins,John Gaspard
TI  - Three-dimensional thinking
AV  - BF441 .G84 1924
U1  - 150 KCAL 
PY  - 1924///]
CY  - Cape Town
PB  - Maskew Miller
KW  - Thought and thinking
KW  - fast
ER  -