RT Journal Article SR Electronic T1 The detection and determination of potassium spectroscopically JF American Journal of Science JO Am J Sci FD American Journal of Science SP 448 OP 459 DO 10.2475/ajs.s3-42.252.448 VO s3-42 IS 252 A1 F. A. Gooch A1 T. S. Hart YR 1891 UL http://www.ajsonline.org/content/s3-42/252/448.abstract AB