Guasch, Juan Martin D.R. Travel and tours : Tourism 1 / Juan Martin D. R. Guasch, James D. R. Olarve, Adonis F. Olarve. - Metro Manila : Groundwater Building, c2008. - 176 pages : illustrations ; 26 cm Bibliography : p. 175-176. ISBN: 9789717251547 Subjects--Topical Terms: Tourism--Study and teaching--Philippines. LC Class. No.: G155.8 / G93 2008