Prehm, Herbert J. Improving instruction through classroom research / [electronic resource] / Herbert J. Prehm, Reuben Altman.. — Denver : : Love Pub. Co.,, c1976.. — 107 p. ; 23 cm. — (Special education paperback series).
0891080562 9780891080565
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Education--Research. Children with disabilities--Education--Research. Éducation--Recherche.