Alex Debogorski
Svein Sigfusson
United States. Congress. House. Committee on the District of Columbia
Bengt H:son Ager
Unknown Author
B. S. Parmenter
David B. Boies
Byrd, Tallamy, Macdonald & Lewis.
William C. Besselievre
United States. Army. Corps of Engineers.
Mark Joerger
United States
George H. Henshaw
International Symposium on Snow Removal and Ice Control Research Hanover, N.H. 1978.
International Symposium on Snow Removal and Ice Control Research (1978 Hanover, N.H)
Heinz Ahlbrecht
Eric G. Johnson
Turkey. Karayolları Genel Müdürlüğü.
National Research Council, Canada. Associate Committee on Geotechnical Research. Working Group on Urban Snow Removal.