Proficiency survival craft imo module course-1.23 : for maritime schools in the philippines 
Ventosa, Florencio T. 
 -  National Book Store.  2000 
 - 75 pages. 
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<br/><br/><label>ISBN: </label>9-71086045-3 
<br/><br/><label>Dewey Class. No.: </label>M 613.6 V56p 2000