TY  - BOOK
AU  - Cruz, Zenaida L.
TI  - Principles of tourism : part 1 
SN  - 9789712364907
AV  - G 155.A1 .C888 2006
PY  - 2013///
CY  - Manila
PB  - Rex Book Store
N1  - Includes bibliographical references and index; BSBA
ER  -