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by William C. Boynton (California Polytechnic State Univ. at San Luis Obispo); Raymond N. Johnson (Portland State Univ.); Walter G. Kell (Univ. of Michigan)
by Raymond N. Johnson, Laura Davis Wiley
by Raymond N. Johnson; Laura Davis Wiley
by Johnson, Raymond N.; Wiley, Laura Davis; Moroney, Robyn; et al.