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MARC view
Hansen, Viggo P. (Personal Name)
Computers in mathematics education, c1984: CIP t.p. (Viggo P. Hansen, California State Univ., Northridge)
Bell, E. Essential skills for arithmetic, c1987: CIP t.p. (Peter Hansen) galley (signed at: Northridge, CA)
Phone call to publisher, 6-10-86 (Peter is the middle name for Viggo P. Hansen)