PT  - JOURNAL ARTICLE
AU  - John Strong Newberry
TI  - On the parallelism of coal seams
AID  - 10.2475/ajs.s3-7.40.367
DP  - 1874 Apr 01
TA  - American Journal of Science
PG  - 367--369
VI  - s3-7
IP  - 40
4099  - http://www.ajsonline.org/content/s3-7/40/367.short
4100  - http://www.ajsonline.org/content/s3-7/40/367.full
SO  - Am J Sci1874 Apr 01; s3-7