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  1. 1

    A study of commercial air-transportation services for Philippine rural areas מאת Davila, Enrique H.

    יצא לאור 1971
    Thesis

    A study of commercial air-transportation services for Philippine rural areas
  2. 2

    The impact of liberalization on the Philippine domestic airline industry מאת Manuela, Wilfred S.

    Thesis

    The impact of liberalization on the Philippine domestic airline industry

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