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by Bock, David E.; Bullard, Floyd; Velleman, Paul F.; et al.
by De Veaux, Richard D.; Velleman, Paul F.; Bock, David E.; et al.
by Floyd, Richard
by Brueggemann, Walter; Floyd, Richard
by Bock, David E.; Velleman, Paul F.; De Veaux, Richard D.; et al.
by Floyd, Richard D.
by Ellie Chapple, Richard Baumfield, Richard Copp, Robert Cunningham, Akshaya Kamalnath, Louise Floyd,