Ray, B. (1989) Enumeration of injured indicator bac-
Pathogen reduction capabilities of freeze/thaw sludge
teria from foods. In Injured Index and Pathogenic Bac-
conditioning. Water Research, 28(11): 23932398.
teria: Occurrence and Detection in Foods, Water and
Zapf-Gilje, R. (1985) Treatment and disposal of sec-
Feeds. Boca Raton, Florida: CRC Press, Chapter 2.
ondary sewage effluent through snowmaking. Ph.D.
Ridgway, J.W. (1984) Bacterial recovery from water,
thesis, University of British Columbia, Vancouver, B.C.,
sewage and sewage effluents. 2. Water treatment pro-
Canada.
cesses. In The Revival of Injured Microbes (M.H.E.
Zapf-Gilje, R., S.O Russell, and D.S. Mavinic (1986)
Andrew and A.D. Russell, Ed.). Orlando, Florida: Aca-
Concentration of impurities during melting of snow
demic Press, p. 373.
made from secondary sewage effluent. Water, Science
Sanin, F.D., P.A. Vesilind, and C.J. Martel (1994)
and Technology, 18(2): 151156.
12