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level 8^^<http://www.w3.org/2001/XMLSchema#integer>
symbol G09B7/06
modified 2013-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date>
title Electrically-operated teaching apparatus or devices working with questions and answers of the multiple-choice answer-type, i.e. where a given question is provided with a series of answers and a choice has to be made from the answers
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