- Author: Vidya Dhar Mahajan
- Language: English
- Year: 1967
- Author: R. S. Khurmi and J. K. Gupta
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- Author: Er. R.K. Dhawan
- Language: English
- Year: 2011
- Author: Dr. Sadhu Singh
- Language: English
- Year: 2010
- Author: Dr. Sadhu Singh
- Language: English
- Year: 2012
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- Year: 2012
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- Author: Arun Bahl B S Bahl
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- Year: 1976