RT Journal Article SR Electronic T1 Aqueous vapor in relation to perpetual snow JF American Journal of Science JO Am J Sci FD American Journal of Science SP 103 OP 105 DO 10.2475/ajs.s3-20.116.103 VO s3-20 IS 116 A1 Croll, J. YR 1880 UL http://www.ajsonline.org/content/s3-20/116/103.abstract AB