VUPPALA, N. V. S. Study of Ground Water Quality Analysis in Industrial Zone of Visakhapatnam. Journal of Advanced Laboratory Research in Biology, [S. l.], v. 3, n. 3, p. 231–236, 2012. Disponível em: https://e-journal.sospublication.co.in/index.php/jalrb/article/view/131. Acesso em: 11 apr. 2021.