PT  - JOURNAL ARTICLE
AU  - W. O. Crosby
AU  - G. H. Barton
TI  - Extension of the Carboniferous formation in Massachusetts
AID  - 10.2475/ajs.s3-20.119.416
DP  - 1880 Nov 01
TA  - American Journal of Science
PG  - 416--420
VI  - s3-20
IP  - 119
4099  - http://www.ajsonline.org/content/s3-20/119/416.short
4100  - http://www.ajsonline.org/content/s3-20/119/416.full
SO  - Am J Sci1880 Nov 01; s3-20