Chawla, A.K., Das, C., Singh, P., Tiwari, M. and Chaudhary, S. 2016. Production of tetanus toxin by using media substantially free from meat and blood. Asian Journal of Pharmaceutical and Clinical Research. 9, 6 (Nov. 2016), 284–287. DOI:https://doi.org/10.22159/ajpcr.2016.v9i6.14410.