Mental retardation and behavioural research: study group held at the University of Hull, under the auspices of the Institute for Research into Mental Retardation and with assistance from the Department of Education and science
[book]
/ editors: A. D. B. Clarke and A. M. Clarke
Edinburgh
: Churchill Livingstone
، 1973
xii, 279 p
Institute for Research into Mental Retardation, study group No. 4