1.
Administration for the Human Services: An Introductory Programmed Text
by Ehlers, Walter H., Austin, ...
ISBN: 9780060418687
List Price: $22.66
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Mental Retardation and Other Developmental Disabilities: A Programmed Introduction
by Ehlers, Walter H., Langone,...
ISBN: 9780675098168
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Mental Retardation and Other Developmental Disabilities : A Programmed Introduction
by Ehlers, Walter H., Langone,...
ISBN: 9780318543031
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Introduction to Mental Retardation A Programmed Text
by Ehlers, Walter H., Krishef,...
ISBN: 9780675085267
List Price: $19.95