W. Stog Kg Industrie- Und Rohrleitungsbau
Walter B. Walker
Walter E. Irving
Wardrop Applied Systems Inc.
Wardrop Engineering Inc.
Watson Stewart C.
Watson Bowman Associates Inc.
Watson-Bowman Associates Inc.
Watts William Mcewen
Weaver Brian F.
West Glen O.
West Bridge Corp.
Wilks John R.
William M. Slater
William E. Cary Limited
Williams A. Arthur
Winter Bruce R.
Wintergerst Louis
Wirzberger Erich
Wolford Catherine