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2183
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Superior document: Bild und Bit Series ; v.15
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2185
2186
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2188
2189
2190
2191
2192
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2193
Published: 2001.
Superior document: Johns Hopkins studies in the history of technology
2194
Published: 2007.
2195
2196
2197
Published: c2003.
Superior document: History of communication
2198
Published: 2004.
2199
Published: c2007.
2200
Published: c2009.