Supervision and instructional leadership : a developmental approach 
Glickman, Carl D. 
 - 6th ed. 
 -  Pearson,  2004 
 - xx, 508 p. 
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<br/><br/><label>ISBN: </label>0-205-38079-4 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School supervision.
<br/><br/><label>Dewey Class. No.: </label>GS 371.203 G49s 2004