Hi All, I'm hoping to tap into the resources of this list. Would anyone happen to have an electronic copy of: Licklider, J. C. (1951). "A duplex theory of pitch perception." Experientia 7(4): 128-34. We have a hard copy of the journal in our library annex but the volume is stitched together too tightly to actually get a readable photocopy of the article. Thanks, Ben Hornsby