Author : Dr. V. C. Sinha , Dr. Pushpa Sinha, Dr. Kumar A. N. Shadev

Book Code : 6666

Language : Hindi

ISBN : 978-93-5167-901-1

Author : Dr. V. C. Sinha, Dr. Pushpa Sinha

Book Code : 6645

Language : Hindi

ISBN : 978-93-5167-780-2

Author : Dr. V. C. Sinha

Book Code : 6646

Language : English

ISBN : 978-93-88117-78-4