RT Journal Article SR Electronic T1 Diversity of the glacial drift along its boundary JF American Journal of Science JO Am J Sci FD American Journal of Science SP 358 OP 365 DO 10.2475/ajs.s3-47.281.358 VO s3-47 IS 281 A1 Warren Upham YR 1894 UL http://www.ajsonline.org/content/s3-47/281/358.abstract AB