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by Becker, Peter; Lippert, Barbara
by Becker, Peter M.; Bertels, Gary L.; Morgenthaler, Shirley K.
by Canfield, Jack; Hansen, Mark Victor; Becker, Marty; et al.
by Becker, Peter; Von Krosigk, Rudiger
by Becker, Jurgen; Woods, Roger; Athanas, Peter; et al.
by Becker, Joseph Peter
by Becker, Peter
by Ahlert, D.; Becker, J.; Kenning, Peter; et al.
by Becker, Peter; Leisse, Olaf
by Becker, Eve-Marie; Pilhofer, Peter