Seal, B. (1991). The Positive sciences of the Ancient. Motilal Banarsidass.
Chicago-čujuhus (17. p.)Seal, Brajendranath. The Positive Sciences of the Ancient. Delhi: Motilal Banarsidass, 1991.
MLA-čujuhus (9. p.)Seal, Brajendranath. The Positive Sciences of the Ancient. Motilal Banarsidass, 1991.
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