Atmospfera, R. (1973). Philippine export instability, concentration and economic development [microform]. Photoduplication Service.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रAtmospfera, Roberto. Philippine Export Instability, Concentration and Economic Development [microform]. Quezon City: Photoduplication Service, 1973.
एमएलए (9वां संस्करण) प्रशस्ति पत्रAtmospfera, Roberto. Philippine Export Instability, Concentration and Economic Development [microform]. Photoduplication Service, 1973.
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