Hydrography.
Subtitle: Description of long wire drag.
By: By N. H. Heck.
Contributors: Heck, N. H. 1882-1953.
Publisher: Govt. print. off.
Published: 1910
Place of publication: Washington
Language: eng
Number of pages: 21
Subjects: Drags (Hydrography)
Other titles: Description of long wire drag.
Notes: At head of title: Department of commerce and labor. Coast and geodetic survey. O. H. Tittmann, superintendent. Hydrography.