![]() Image Number K9906-1 |
Biological technician Sheryl Ver Wey prepares to count colonies of fecal coliform bacteria in a water sample.
Photo by Peggy Greb.
![]() Image Number K9906-1 |
Biological technician Sheryl Ver Wey prepares to count colonies of fecal coliform bacteria in a water sample.
Photo by Peggy Greb.