Language, cognitive deficits, and retardation / edited by Neil O'Connor.

London : Butterworths, 1975.

xii, 233 pages : illustrations ; 22 cm.

"Held at Friends House, London on 11-13 December, 1972 under the auspices of the Institute for Research into Mental and Multiple Handicap"

Published on behalf of the Institute for Research into Mental and Multiple Handicap

Includes bibliographies.