If you do not have a Google account, but do have a local account, you can still log in:
Forgot your password?
Create an account
Mahajan M., . (2016). Operations Research. Delhi: Dhanpat Rai.
Mahajan M, . 2016. Operations Research. Delhi: Dhanpat Rai.
Mahajan M, . Operations Research. Delhi: Dhanpat Rai. 2016.