BABU, B. R., S. A. KUMARI, and N. S. R. KUMAR. “RARE VARIANTS OF SOME PLACENTAL ENZYMES IN DIFFERENT CASTE GROUPS OF ANDHRA PRADESH”. UTTAR PRADESH JOURNAL OF ZOOLOGY, vol. 34, no. 1, Feb. 2014, pp. 53-55, https://www.mbimph.com/index.php/UPJOZ/article/view/453.