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2
Systems Analysis and Simulation
II: Applications ; Proceedings of the International Symposi...
Mathematical Research ; 28, 2, Mathematische Forschung
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3
Annual report of the Board of Regents of the Smithsonian In..
United States congressional serial set ; serial set no. 2266;Mis. doc. / 48th Congress, 2nd session. Senate ; no. 33, pt. 1 & 2