| Schoff, W.H., 1915. Some aspects of the overland oriental trade at the Christian era. Journal of the American Oriental Society 35: 31-41
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| Schoff, W.H., 1912. The Periplus of the Erythraean Sea: travel and trade in the Indian Ocean by a merchant of the first century. London, Bombay and Calcutta, Longmans, Green and Co, pp. i, 1-323
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