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Journal of Experimental Psychology. Human Perception and Performance|June 1, 1982
Abstraction of themes from melodic variationsR L WelkerSeminars in Thoracic and Cardiovascular Surgery|November 4, 1998
Update on myocardial contrast echocardiography: a surgeon's perspectiveW D Spotnitz, R L WelkerScience (New York, N.Y.)|December 1, 1972
Acquisition of Key-Pecking via Autoshaping as a Function of Prior Experience: "Learned Laziness"?L A Engberg, G Hansen, R L Welker, et al.Pageof 1