Harlow, Harry F.2018-04-212018-04-212018-04-21http://hdl.handle.net/11693/42829Reprinted from Scientific American-- Vol180, no6 (August 1949), pp36-396 pages: illustrationsEnglishRP00108Learning to think/ H.F.Harlow, M.K.Harlow.OffprintBILKUTUPRP00108