TY  - BOOK
T1  - The impact of regional income on the volume of air passenger traffic
A1  - Gregorio, Gilfredo L.
A2  - Villegas, Roberto C.
LA  - English
UL  - https://ds.mainlib.upd.edu.ph/Record/UP-99796217603415641
NO  - Thesis (A.B.)--University of the Philippines, Quezon City.
NO  - Typescript.
CN  - LG 993.5 1980 E2 G74
KW  - Aeronautics, Commercial : Passenger traffic. : Philippines.
KW  - Aeronautics and state : Philippines.
ER  -