Narayana Ayyar. (1966). Pharmacognosy of ayurvedic drugs. University of Kerala.
Chicago Edition CitationNarayana Ayyar. Pharmacognosy of Ayurvedic Drugs. Thiruvananthapuram: University of Kerala, 1966.
Cita MLANarayana Ayyar. Pharmacognosy of Ayurvedic Drugs. University of Kerala, 1966.
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