Philippines. University. Science Education Center. (1967). High school mathematics 2. U.P. SEC.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPhilippines. University. Science Education Center. High School Mathematics 2. Quezon City: U.P. SEC, 1967.
एमएलए (9वां संस्करण) प्रशस्ति पत्रPhilippines. University. Science Education Center. High School Mathematics 2. U.P. SEC, 1967.
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