RT Journal Article SR Electronic T1 Preliminary account of the iced bar base apparatus of the U. S. Coast and Geodetic Survey JF American Journal of Science JO Am J Sci FD American Journal of Science SP 33 OP 53 DO 10.2475/ajs.s3-45.265.33 VO s3-45 IS 265 A1 Woodward, R. S. YR 1893 UL http://www.ajsonline.org/content/s3-45/265/33.abstract AB