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_aOrganización de las Naciones Unidas para la educación, la ciencia y la cultura (UNESCO) _95107 |
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| 245 | 1 | 0 | _aWorld summary of statistics on science and technology; results of experimental surveys of scientific and technical manpower and expenditures for research and experimental development, statistiques de la science et de la technologie |
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_aParís, _c1970. |
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| 300 |
_a66 p. : _btablas ; _c27 cm. |
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_aStatistical reports and studies ; _v17 |
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| 650 | 4 |
_aCIENCIA-ESTADISTICA _990683 |
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| 650 | 4 |
_aTECNOLOGIA-ESTADISTICA _990684 |
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