Labour, I. N. C. o. (1969). Final Report of the Study Group for Fertilizers. The author.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLabour, India. National Commission on. Final Report of the Study Group for Fertilizers. The author, 1969.
एमएलए (9वां संस्करण) प्रशस्ति पत्रLabour, India. National Commission on. Final Report of the Study Group for Fertilizers. The author, 1969.
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