All A.O. 121 and 135 operators

Xehetasun bibliografikoak
Argitaratua izan da:	Philippine Star (Mar. 24, 2000), 30
Formatua:	Artikulua
Hizkuntza:	ingelesa
Argitaratua:	2000
Gaiak:	Aviation > Study and teaching Philippines. Department of Transportation and Communications. Air Transportation Office > Memoranda, Circulars, etc.