Ship and ship routines 
Dela Calzada, Limic. 
 -  Philippine Foundation for Maritime Teaching Aids, Inc. (MARTA)  2000 
 - vi, 179 pages. 
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<br/><br/><label>ISBN: </label>9-71840009-5 
<br/><br/><label>Dewey Class. No.: </label>M 623.8 Sh6 2000