Langenbach, Michael. 4 0
An introduction to educational research / 6
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Michael Langenbach, Courtney Vaughn, Lola Aagaard.
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- xii, 387 pages 24 cm.
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Includes bibliographical references and index.
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Professional.
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0205139027 (hardcover)
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LB1028 / .L27 19932
370.78 L261i 1994 / 220
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