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Astronauts. Americana Group Publishing. ISBN 0966796144. Shayler, David; Vis, Bert (2005). Russia's Cosmonauts: Inside the Yuri Gagarin Training Center. Birkhäuser...

Library:Scholarly Publishing Office and DLXS. Retrieved on: November 17, 2007 Bert Roest (1997). "Compilation as Theme and Praxis in Franciscan Universal Chronicles"...

CS1 maint: discouraged parameter (link) Kinzler, Kenneth W.; Vogelstein, Bert (2002). "Introduction". The genetic basis of human cancer (2nd, illustrated...