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
著者
書誌事項
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
（Scientific American series）
Munn & co., inc., 1917, c1916
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注記
"With 800 illustrations" -- T.p
Includes index