RT Journal Article SR Electronic T1 Method for the determination of barium in the presence of calcium and magnesium JF American Journal of Science JO Am J Sci FD American Journal of Science SP 521 OP 525 DO 10.2475/ajs.s3-43.258.521 VO s3-43 IS 258 A1 Mar, F. W. YR 1892 UL http://www.ajsonline.org/content/s3-43/258/521.abstract AB