Records and results of a magnetic survey of Pennsylvania and parts of adjacent states
Subtitle: in 1840 and 1841, with some additional records and results of 1834-35, 1843 and 1862, and a map
By: by A. D. Bache.
Series: Smithsonian contributions to knowledge -- v. 13, art. 8; Smithsonian Institution publication -- 166; Publication (Smithsonian Institution) -- 166.
Publisher: Smithsonian Institution
Published: 1978
Place of publication: [Washington
Language: eng
Format: Microform
Number of pages: 82
Subjects: Geomagnetism -- Pennsylvania.
Notes: Microfiche. Washington, D.C., Brookhaven Press, 1978. on no. 5-6 of 7 microfiches ; 11 x 15 cm.