File:FMIB 35033 Treating pond with copper sulphate for killing algae Laborer is dragging a small bag of the chiemical through the water by means.jpeg
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FMIB_35033_Treating_pond_with_copper_sulphate_for_killing_algae_Laborer_is_dragging_a_small_bag_of_the_chiemical_through_the_water_by_means.jpeg (693 × 399 pixels, file size: 45 KB, MIME type: image/jpeg)