RT Journal Article SR Electronic T1 On the estimation of chlorates and nitrates, and of nitrites and nitrates, in one operation JF American Journal of Science JO Am J Sci FD American Journal of Science SP 231 OP 235 DO 10.2475/ajs.s3-46.273.231 VO s3-46 IS 273 A1 Roberts, C. F. YR 1893 UL http://www.ajsonline.org/content/s3-46/273/231.abstract AB