Cruz, Zenaida Lansangan <br/><br/>Principles of tourism:  part I/ Zenaida Lansangan Cruz.--  -- Manila, Philippines:  Rex Book Store,  2013.  <br/>x, 326 p.:  ill.;  22 cm. <br/><br/> Includes bibliographical references and index. <br/><br/><label>ISBN: </label>978-971-23-6490-7 <br/><br/><label>Subjects--Topical Terms: </label><br/>Tourism -- Philippines.<br/>Tourism -- Study and Teaching.