

Water sampling to determine presence and levels of toxic stages of pfiesteria piscicada. The sampler is wearning a respirator due to the possiblity of human health problems casused by direct contact with the water containing toxic stages of the dino flaggelate, pfiesteria piscicada.
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Copyright David Harp/Mira.com
Size: 5013x3314 / 4.4MB>