De Voretz, D. J. A dynamic programming model for the Philippines educational sector [microfilm]. Photoduplication Service, University of the Philippines Library,1976.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रDe Voretz, Don J. A Dynamic Programming Model for the Philippines Educational Sector [microfilm]. Quezon City: Photoduplication Service, University of the Philippines Library,1976.
एमएलए (9वां संस्करण) प्रशस्ति पत्रDe Voretz, Don J. A Dynamic Programming Model for the Philippines Educational Sector [microfilm]. Photoduplication Service, University of the Philippines Library,1976.
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