WRENN, C. GILBERT.
Study-habits inventory, by C. Gilbert Wrenn & Wilbur J. Humber. Rev. ed.
WRENN, C. GILBERT. Study-habits inventory, by C. Gilbert Wrenn & Wilbur J. Humber. Rev. ed. © 16Jun41; AA372497. C. Gilbert Wrenn (A); 16Dec68; R451263.
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