By Wilkerson D. C.   in Early Childhood Education Journal

ISSN:1082-3301|24|3|155-160

Springer Publishing Company ‎(1997)‎

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By Grimes S.R.   Wilkerson D.C.   Noss K.R.   Wolfe S.A.   in Gene

ISSN:0378-1119|304|unknown|13-21

Elsevier‎(2003)‎

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