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6por Forbes, R. J. (Robert James), 1900-Subjects “...Technology and civilization....”
Publicado 1971
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7por Walker, Charles R. (Charles Rumford), 1893-Subjects “...Technology and civilization....”
Publicado 1968
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8por Walker, Charles R. (Charles Rumford), 1893-Subjects “...Technology and civilization....”
Publicado 1962
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10Publicado 1972Subjects “...Technology and civilization Congresses....”
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15Publicado 1973SubjectsLibro
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