chaudhary, Dr. Varsha, Dr. Rajeev Kumar, Dr. V.K. Agarwal, and Mr. Mahender Sharma. 2010. “Evaluation of Primary Immunization Coverage in an Urban Area of Bareilly City Using Cluster Sampling Technique: Evaluation of Primary Immunization Coverage in an Urban Area”. National Journal of Integrated Research in Medicine 1 (4):10-15. http://www.nicpd.ac.in/ojs-/index.php/njirm/article/view/1879.