TY  - BOOK
AU  - Diethelm,Walter
TI  - Visual transformation
AV  - N7430.5 D537V
PY  - 1982///
CY  - Zurich
PB  - ABC Verlag
KW  - VISUAL PERCEPTION
KW  - DESIGN
KW  - CREATION (LITERARY, ARTISTIC, ETC.)
ER  -