RT Journal Article SR Electronic T1 On the geographic and hypsometric distribution of North American Viviparidae JF American Journal of Science JO Am J Sci FD American Journal of Science SP 132 OP 141 DO 10.2475/ajs.s3-48.284.132 VO s3-48 IS 284 A1 R. E. Call YR 1894 UL http://www.ajsonline.org/content/s3-48/284/132.abstract AB