Langenbach, Michael. 4 0

An introduction to educational research / 6 6 Michael Langenbach, Courtney Vaughn, Lola Aagaard. - - - xii, 387 pages 24 cm. - - - - - . - . - 0 . - . - 0 .



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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