Dartmouth College has selected Cambridge, Mass.-based Bruner/Cott & Associates Inc. and Moore Ruble Yudell Architects & Planners of Santa Monica, Calif., to plan and design a major expansion of their Hanover, N.H. campus. Slated for completion in 2004, the project features a new mathematics hall, a dining hall, and dormitory facilities for 500 to 600 students.