TY  - JOUR
T1  - Helicopter landing take-off area not covered by A.O. No. AGA 14.03, series of 1973
JF  - Philippine Star
LA  - English
YR  - 2000
UL  - https://tuklas.up.edu.ph/Record/IPN-00000013251
KW  - Helicopters : Laws and regulations
KW  - Philippines. Department of Transportation and Communications. Air Transportation Office. Memorandum Circular No. 030
ER  -