Iyer, U. (2006). A textbook in business economics S.Y.B.Com (7th.). Aishwarya.
Dyfyniad Arddull ChicagoIyer, Usha. A Textbook in Business Economics S.Y.B.Com. 7th. Mumbai: Aishwarya, 2006.
Dyfyniad MLAIyer, Usha. A Textbook in Business Economics S.Y.B.Com. 7th. Aishwarya, 2006.
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