Rahman, M.M., Begum, N., Ali, T., Rouf, M.A. and Masood, S. 2016. Vitamin B12 and ketorolac on pain in Long Evans rats. Journal of Bangladesh Society of Physiologist. 11, 2 (Dec. 2016), 63–69. DOI:https://doi.org/10.3329/jbsp.v11i2.30653.