PT  - JOURNAL ARTICLE
AU  - Henry Shaler Williams
TI  - Channel fillings in upper Devonian shales
AID  - 10.2475/ajs.s3-21.124.318
DP  - 1881 Apr 01
TA  - American Journal of Science
PG  - 318--320
VI  - s3-21
IP  - 124
4099  - http://www.ajsonline.org/content/s3-21/124/318.short
4100  - http://www.ajsonline.org/content/s3-21/124/318.full
SO  - Am J Sci1881 Apr 01; s3-21