10. Worth, A. M.: “Studies on the Treatment of Combined Textile Wastes and Domestic Sewage, ” Thesis, University of North Carolina (1928).
2.
11. Rudolfs, Willem: “Effects of Certain Trade Wastes on Sludge Digestion, ” United States Public Health Peports, Reprint No. 1223 (1928).
3.
12. Copson, R. L.; Curtis, H. A.: “Disposal of Waste Kier Liquor, ”Transactions of the Institute of Chemical Engineers, XXIII, 80 (1929).
4.
13. Buswell, A. M.; Strickhouser, S. I.: “The Depth of Sewage Filters and the Degree of Purification, ” Bulletin No. 26, Illinois State Water Survey (1928).
5.
14. Dunbar, W. P.: “Principles of Sewage Treatment” (1908).
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15. Clark, H. W.; Adams, G. 0.: “The Influence of Carbon upon Nitrification, ”J. Ind. Eng. Chem., IV, 272 (1912).
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16. Casselman, E. J.: “Prevention of Stream Pollution by Dye and Intermediate Wastes, ” United States Public Health Peports, Reprint No. 581.
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17. Hunley, J.: “Some Experiences with Trade Effluents, ”Proceedings of the Association of Managers of Sewage Disposal Works (1930); also Surveyor, LXXVIII, 493 (Nov. 14, 1930).
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18. Lanphear, R. S.: “The Treatment of Sewage Containing Industrial Wastes, ”Sewage Works Journal, III, 276 (April, 1931).
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19. North Carolina State Board of Health: “The Textile Waste Situation in North Carolina” (1930).
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20. Rolants, E.: “Treatment of Industrial Waste Water, ”Water and Water Engineering, XXXII, 171 (April 19, 1930).
