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by Barr, Margaret J.; McClellan, George S.
by Barr, Margaret J.; McClellan, George S.; Sandeen, Arthur
by Renn, Kristen A.; Hughes, Carole; Barr, Margaret J.
by Barr, Margaret J.; Upcraft, M. Lee
by Kleinig, John; Smith, Margaret Leland; Barr, Heather; et al.
by Margaret J. Barr (Northwestern Univ.)
by Sandeen, Arthur; Barr, Margaret J.
by Margaret J. Barr (Northwestern University); George S. McClellan (Indiana University– Purdue University)