Philippines. Department of Trade and Tourism. (1972). Integrated development and promotion of Philippine tourism and foreign trade: Background material. The Department.
Chicago-viite (17. p.)Philippines. Department of Trade and Tourism. Integrated Development and Promotion of Philippine Tourism and Foreign Trade: Background Material. [Manila]: The Department, 1972.
MLA-viite (9. p.)Philippines. Department of Trade and Tourism. Integrated Development and Promotion of Philippine Tourism and Foreign Trade: Background Material. The Department, 1972.
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