Reddy,Obul D, & Chekkodi,C M. (1999). Quantitative techniques. Himalaya Publishing House.
Dyfyniad Arddull ChicagoReddy,Obul D, and Chekkodi,C M. Quantitative Techniques. Mumbai: Himalaya Publishing House, 1999.
Dyfyniad MLAReddy,Obul D, and Chekkodi,C M. Quantitative Techniques. Himalaya Publishing House, 1999.
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