Marine approaches to U.S. ports
Subtitle: a flexible and obstruction-free system is needed : report to the Congress
By: by the Comptroller General of the United States.
Publisher: General Accounting Office
Published: 1978
Place of publication: [Washington
Language: eng
Subjects: Trade routes.; Offshore oil well drilling.; Coastwise navigation.
Notes: "CED-78-107."

"B-118678" -- Letter of transmittal.

Stamped on cover: May 2, 1978.