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by Williams, Ronald J.; Beckman, John C.
by Beckman, John
by Duffie, John A.; Beckman, William A.; Blair, Nathan
by Edited by Klaus G. Strassmeier , Alexander G. Kosovichev , John E. Beckman
by Lehner, Christoph; Renn, Jurgen; Schemmel, Matthias; et al.
by Edited by John Kingston , Mary E. Beckman
by Beckman, John C.
by John Etienne Beckman