Estrella, R. M. (1977). Particle dynamics on pseudospherical surfaces of revolution [microform]. University of the Philippines Library.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रEstrella, Rogelio M. Particle Dynamics on Pseudospherical Surfaces of Revolution [microform]. Quezon City: University of the Philippines Library, 1977.
एमएलए (9वां संस्करण) प्रशस्ति पत्रEstrella, Rogelio M. Particle Dynamics on Pseudospherical Surfaces of Revolution [microform]. University of the Philippines Library, 1977.
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