00972cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040005800111042001200169043001200181045000900193050002200202100005000224245020600274260005000480300003000530490006400560490004500624650003200669999001700701s  13000062 DLC20260227111910.0780221s1863    dcua         f000 0 eng c  as  13000062   a(OCoLC)3655364  aLibrary, Smithsonian InstitutioncNGenoUdNGenoUdDLC  apremarc  an-us-pa  aw3w600aQ11b.S68 vol. 131 aBache, A. D.q(Alexander Dallas),d1806-1867.10aRecords and results of a magnetic survey of Pennsylvania and parts of adjacent states,bin 1840 and 1841, with some additional records and results of 1834-35, 1843 and 1862, and a map.cBy A. D. Bache.  a[Washington,bSmithsonian Institution,c1863]  avi, 82 p.bchart.c33 cm.0 aSmithsonian contributions to knowledge. [vol. XIII, art. 8]0 aSmithsonian Institution publication 166. 0aGeomagnetismzPennsylvania.  c52630d52630