Workbook in maritime pollution and prevention 
Oblepias, Teresita San Diego. 
 -  Philippine Foundation for Maritime Teaching Aids, Inc. (MARTA)  2000 
 - iv, 26 pages. 
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<br/><br/><label>ISBN: </label>9-71840022-2 
<br/><br/><label>Dewey Class. No.: </label>M 363.73 M33 2000