TY  - BOOK
AU  - Paraquin,Karl Heinz
TI  - Juegos visuales
SN  - 8433584162
AV  - QP 495 P223j 1978
PY  - 1978///
CY  - Barcelona
PB  - Labor
KW  - Optical illusions
KW  - Juvenile literature
KW  - Puzzles
KW  - Ilusiones ópticas
KW  - bidex
KW  - Rompecabezas
N1  - Tít. Orig.: Schummelbilder
N2  - A collection of over 100 optical illusion puzzles, with explanations of the reasons for their effects
ER  -