Proceedings of the First Congress of the International Association for the Scientific Study of Mental Deficiency (Comptes rendus du Premier Congress de l' Association Internationale pour l'Etude Scientifique de l'Arrieŕation Mentale) Montpellier, France, 12-20September 1967 /
International Association for the Scientific Study of Mental Deficiency.Congress(1st :1967 :Montpellier).
Richards, B. W.(Barry Wyndham)
Reigate : Michael Jackson Publishing Co.,
1968.
Includes bibliography and index.