PT  - JOURNAL ARTICLE
AU  - Watson, Thomas Leonard
TI  - On a dike of diabase in the Potsdam sandstone in the Valley of Virginia
AID  - 10.2475/ajs.s4-23.134.89
DP  - 1907 Feb 01
TA  - American Journal of Science
PG  - 89--90
VI  - s4-23
IP  - 134
4099  - http://www.ajsonline.org/content/s4-23/134/89.short
4100  - http://www.ajsonline.org/content/s4-23/134/89.full
SO  - Am J Sci1907 Feb 01; s4-23