PT  - JOURNAL ARTICLE
AU  - Thwing, C. B.
TI  - A photographic method of mapping the magnetic field
AID  - 10.2475/ajs.s3-44.263.374
DP  - 1892 Nov 01
TA  - American Journal of Science
PG  - 374--381
VI  - s3-44
IP  - 263
4099  - http://www.ajsonline.org/content/s3-44/263/374.short
4100  - http://www.ajsonline.org/content/s3-44/263/374.full
SO  - Am J Sci1892 Nov 01; s3-44