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 International Review of Research in Mental Retardation, Volume 21
by: Norman W. Bray
 International Review of Research in Mental Retardation, Volume 19
by: Norman W. Bray
 Transparent Plastics: Design and Technology
by: Simone Jeska
 International Review of Research in Mental Retardation, Volume 13
by: Norman R. Ellis
 International Review of Research in Mental Retardation, Volume 12
by: Norman R. Ellis
 International Review of Research in Mental Retardation, Volume 11
by: Norman R. Ellis
 International Review of Research in Mental Retardation, Volume 10
by: N. R. Ellis
 International Review of Research in Mental Retardation, Volume 09
by: Norman R Ellis
 International Review of Cytology, Volume 173
by: Kwang W. Jeon
 International Review of Cytology, Volume 166
by: Kwang W. Jeon