Note 6 — CHEMICAL EXAMINATION.
Reading edition
Clark, H. W. Experiments upon the purification of sewage and water at the Lawrence Experiment Station: Report Mass. State Board of Health, pp. 427–578, 1896.
Reading edition
Clark, H. W. Experiments upon the purification of sewage and water at the Lawrence Experiment Station: Report Mass. State Board of Health, pp. 427–578, 1896.