Our country and its resources what we ought to know about agriculture--fisheries--forests--Panama canal--railroads--manufactures--automobiles--industrial preparedness--the new navy--the army--our money--aeronautics--motion pictures--the weather--astronomy--the nation's capital--the President--Congress--all about the government
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| Formato: | Libro |
| Idioma: | English |
| Publicado: |
New York
Munn & co., inc.
1918.
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| Series: | Scientific American series
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| Subjects: |