Our country--
Subtitle: an undefended treasure land ...
Publisher: Munn & Co., Inc.
Published: uuuu
Place of publication: [New York]
Language: eng
Number of pages: 36
Subjects: United States -- Defenses.
Notes: Diagram on verso of front cover.
"A reprint from the Scientific American."
1st in volume 45 of pamphlets: European war, 1914-1918.