Learning aid and puzzle

Details Learning aid and puzzle Learning aid and puzzle

1987-04-21

1988-10-11

Oechsle, Anton O.

Education and demonstration

Question or problem eliciting response

Correctness of response indicated to examine by...

273157R, 434404, 434406, A63F 910, G09B 122

Patent

active

047768029

ABSTRACT:
A learning aid comprising

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Cleo Learning Aids Catalog, 1976, p. 116 434-348.

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