
- Author: D P Kothari, H S Kalsi, I J Nagrath
- Language: English
- Year: 2015

- Author: D.P. Kothari, I.J. Nagrath
- Language: English
- Year: 2017

- Author: D. P. Kothari I. J. Nagrath
- Language: English
- Year: 2010

- Author: D. P. Kothari I. J. Nagrath
- Language: English
- Year: 2014

- Author: D.P. Kothari J.S. Dhillon.
- Language: English
- Year: 2015

- Author: NOAH FLEMING, PRAVESH KOTHARI, TONIANN PITASSI.
- Language: English
- Year: 2019

- Author: Kothari Richa, Singh D. P., Tyagi V. V
- Language: English
- Year: 2019
- Author: S. N. Singh R. K. Pandey Bijaya Ketan Panigrahi D. P. Kothari
- Language: English
- Year: 2020