Meer, Thelma Q. ; et.al.,  c2004. <br/><br/>
Basics of Logic / 
Meer, Thelma Q. ; et.al. 
 - Bulacan, Philippines :  Trinitas Publishing Inc,  c2004. 
 - 163 p. :  ill. ; appendix ; glossary ; index ; bibliography ;  25cm. 
<br/><br/><label>ISBN: </label>971-42-0431-3