TY  - JOUR
PY  - 1846//
TI  - Observations of the Magnetic Dip, Made at Several Positions, Chiefly on the South-Western and North-Eastern Frontiers of the United States, and of the Magnetic Declination at Two Positions on the River Sabine; In 1840
JO  - Transactions of the American Philosophical Society
A1  - Graham, James D.
SP  - 329
EP  - 380
VL  - 9
IS  - 3
N2  - <p>[Abstract unavailable]</p> 
LA  - 
SN  - 0065-9746
UR  - http://dx.doi.org/10.2307/1005362
ID  - ref1
ER  -