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by Miller, Arnold; Smith, Theresa C.; Callahan, Paul J., Dr.; et al.
by Skousen, Paul B.; Skousen, W. Cleon; Friberg, Arnold
by Magda B. Arnold
by Come, Arnold B.
by Scheibel, Arnold B.; Wechsler, Adam F.
by Arnold, Matthew B.; Day, Robert M.; World Resources Institute
by Kanter, Arnold B.; Hoffman, Paul