@article{article30ee9eb8,
title   = {Monitoring sao paulo state rivers in brazil for mutagenic activity using the ames test},
author = {Valent, G U and Sato, M I Z and Coelho, M C L S and Coimbrao, C A and Sanchez, P S and Martins, Maria Therezinha and Bonatelli Junior, R},
year = {1993},
doi = {10.1002/tox.2530080403},
journal   = {Environmental Toxicology and Water Quality: an International Journal}
}