International Review of Research in Mental Retardation, Vol. 2
Edited by Norman R. Ellis. Pp. xiii + 366. (New York: Academic Press, Inc.; London: Academic Press, Inc. (London), Ltd., 1966.) 92s.
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HOLT, K. Learning and Retardation. Nature 214, 637 (1967). https://doi.org/10.1038/214637a0
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DOI: https://doi.org/10.1038/214637a0