Scientific and technical societies of the United States and Canada. Pt. 1, Scientific and technical societies of the United States / comp. by The Library National Academy of Sciences, National Research Council. Pt. 2, Scientific and technical societies of Canada / comp. by John R. Kohr.
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| Formato: | Libro |
| Lenguaje: | inglés |
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Washington :
National Academy of Sciences - National Research Council,
1955.
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