Das, R. K. (1930). The industrial efficiency of India. London: P.S. King & son, ltd.
Chicago Style aipamenaDas, Rajani Kanta. The Industrial Efficiency of India. London: P.S. King & son, ltd, 1930.
MLA aipamenaDas, Rajani Kanta. The Industrial Efficiency of India. London: P.S. King & son, ltd, 1930.
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