General chemistry for maritime students workbook 
Sibonga, Dolores N. 
 - rev. ed. 
 -  MARTA.  2008 
 - viii, 40 p. 
978-9-71030637-4
Chemistry -- Problems, exercises, etc.
M 540.076 S564 2008
                        978-9-71030637-4
Chemistry -- Problems, exercises, etc.
M 540.076 S564 2008