Institution, 8. B. S. Metre rules and rulers for school use.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रInstitution, 8096 British Standards. Metre Rules and Rulers for School Use.
एमएलए (9वां संस्करण) प्रशस्ति पत्रInstitution, 8096 British Standards. Metre Rules and Rulers for School Use.
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