RAMANUJAM, P. R. (2002). Distance open learning: Challenges to developing countries. Shipra publications.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रRAMANUJAM, P. Renga. Distance Open Learning: Challenges to Developing Countries. Shipra publications, 2002.
एमएलए (9वां संस्करण) प्रशस्ति पत्रRAMANUJAM, P. Renga. Distance Open Learning: Challenges to Developing Countries. Shipra publications, 2002.
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