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classification_ss:"FachNSW"
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theme_ss:"Informationsmittel"
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type_ss:"el"
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year_i:[1990 TO 2000}
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- author's%3a%22Poetzsch%2c E.%22 2
- authors%3a%22Poetzsch%2c E.%22 2
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World Factbook (1995)
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McGraw-Hill Multimedia Encyclopedia of Science & Technology (1996)
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