331.04 Industrial relations by industry and occupation
331.041 Industrial relations in industries and occupations other than extractive, manufacturing, construction de
331.04 Arbeitsbeziehungen nach Industrie und Beruf
331.041 Arbeitsbeziehungen in anderen Industrien als den, anderen Berufen als in den Grundstoffindustrien, dem verarbeitenden Gewerbe, der Bauwirtschaft
Dewey Decimal Classification
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