Hydrography ...
Subtitle: Description of long wire drag.
By: By N.H. Heck ... Appendix no. 7--Report for 1907.
Contributors: Heck, N. H. 1882-1953.
Publisher: Govt. print. off.
Published: 1908
Place of publication: Washington
Language: eng
Number of pages: 562
Subjects: Drags (Hydrography)
Notes: At head of title: Department of commerce and labor. Coast and geodetic survey. O.H. Tittmann, superintendent.
"List of publications of the Coast and geodetic survey (except maps and charts), January, 1903, to December, 1907, inclusive": 4 p. at end.
Cover-title.