Rules and regulations governing private aids to navigation.
|Corporate Author:||United States.|
Washington, D.C. : U.S. Dept. of Commerce, 1930.
Aids to navigation.
"The fourth edition of this circular was issued Apr. 12, 1924, and is entirely superseded by this edition."
"August 1, 1930."
2 p. ;
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|Full view1.4/2:213-5th.ed.||Pennsylvania State University|