Note 7 — CHEMICAL EXAMINATION.
Reading edition
Clark, H. W., and Forbes, F. B. Methods for the determination of lead, tin, zinc, and copper in drinking waters: Report Mass. State Board of Health, pp. 577–85, 1898; pp. 498–506, 1900.
Reading edition
Clark, H. W., and Forbes, F. B. Methods for the determination of lead, tin, zinc, and copper in drinking waters: Report Mass. State Board of Health, pp. 577–85, 1898; pp. 498–506, 1900.