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Sprache: English
Am 1994 von Western Pub. Co. veröffentlicht.
Themen
- Moiré method -- Study and teaching -- Activity programs -- Juvenile literature.
- Optical illusions -- Study and teaching -- Activity programs -- Juvenile literature.
- Toy and movable books -- Specimens.
- Optical illusions.
- Visual perception.
- Toy and movable books.