el koussy, a. (1964). preconditions for educational planning. the institute of national planning.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रel koussy, a.a. Preconditions for Educational Planning. cairo: the institute of national planning, 1964.
एमएलए (9वां संस्करण) प्रशस्ति पत्रel koussy, a.a. Preconditions for Educational Planning. the institute of national planning, 1964.
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