PT  - JOURNAL ARTICLE
AU  - George Huntington Williams
TI  - Piedmontite and scheelite from the ancient rhyolite of South Mountain, Pennsylvania
AID  - 10.2475/ajs.s3-46.271.50
DP  - 1893 Jul 01
TA  - American Journal of Science
PG  - 50--57
VI  - s3-46
IP  - 271
4099  - http://www.ajsonline.org/content/s3-46/271/50.short
4100  - http://www.ajsonline.org/content/s3-46/271/50.full
SO  - Am J Sci1893 Jul 01; s3-46