Self-produced movement is unnecessary for the development of visually-guided depth discrimination
in Richard D. Walk Papers, of University of Akron. Cummings Center for the History of Psychology; with David R. Miller, fl. 1970 and Richard David Walk, 1920-1999, Series Four: Research Files, 1945-1997. Subseries One: Visual Cliff Research, 1958-1996, Box M4928, Folder 9: Visual cliff data - kittens, 1960-1968 , 8 page(s)