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2.
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3.
A.C. Houston.1913. " Studies in Water Supply." Chapter VII, " Water and Disease ." Macmillan & Co.
4.
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5.
G.H. Thistleton-Dyer .1937. " Water Supply and Town Planning ." Proc. British Waterworks Association (1938 ), Vol. XX, pp. 17-28.
6.
Ministry of Health.1936. Model Byelaws XXI. " Prevention of Waste, etc., of Water." Byelaws 2 (xviii) and (xxviii). H.M. Stationery Office.
7.
J.C. Thresh, J.F. Beale and E.V. Suckling.1933. " The Examination of Waters and Water Supplies." Fourth Edition. Chapter XXXIII, " Pathogenic Organisms in Water ." J. & A. Churchill.
8.
G. Ewart Morgans .1935. " The Purification of Water by Ozone." Proc. British Waterworks Association ( 1936), Vol. XVIII, pp. 56-121.
