Cruz-Aviña, J. R. ., Núñez-García, L. G. ., Cabrera, R. ., Díaz-Larrea, J. . and Castañeda-Roldan, E. I. . (2021) “Microbiological and physicochemical quality of water in four crater lakes in the state of Puebla, Mexico ”, Nexo Scientific Journal, 34(06), pp. 1632–1648. doi: 10.5377/nexo.v34i06.13124.