Research problems and variables

Author(s): Morgan, G. A.

Journal/Book: J Amer Acad Child Adolesc Psy. 1999; 38: 227 East Washington Sq, Philadelphia, PA 19106, USA. Lippincott Williams & Wilkins. 784-785.

Note: Article Harmon RJ, CPH Room 2K04, UCHSC Box C268-52, 4200 E 9th Ave, Denver,CO 80262 USA

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