TY  - BOOK
AU  - Bache,A.D.
TI  - Records and results of a magnetic survey of Pennsylvania and parts of adjacent states,: in 1840 and 1841, with some additional records and results of 1834-35, 1843 and 1862, and a map
T2  - Smithsonian contributions to knowledge. [vol. XIII, art. 8]
AV  - Q11 .S68 vol. 13
PY  - 1863///]
CY  - [Washington
PB  - Smithsonian Institution
KW  - Geomagnetism
KW  - Pennsylvania
ER  -