Effective business letters and communication 
Makabuhay, Cynthia Hermosisima. 
 -  National Book Store, Inc.  1989 
 - 180 pages. 
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<br/><br/><label>ISBN: </label>9-71084578-0 
<br/><br/><label>Dewey Class. No.: </label>808.066 M12e 1989