Meer, Thelma Q. <br/><br/>Basics of logic  / Thelma Q. Meer, Lou S. Hualda and Lamberto M. Bamba.--  -- Bulacan:  Trinitas Pub, Inc.  2004.  <br/><br/><label>ISBN: </label>971-42-0431-3 <br/><br/><label>Dewey Class. No.: </label>Fil 160 M471 2004