Ditan, Joseph Linford A. Principles of bar service operations/ Joseph Linford A. Ditan. - Mandaluyong City: National Book Store, c2008. - x,160 pages: illustrations; 26 cm. Includes bibliographical references. ISBN: 9710867148 Subjects--Topical Terms: Bars Dewey Class. No.: DFil 647.95068 / D63