| http://www.w3.org/ns/prov#value | - Using techniques very much like those described by Henrici it is possible to ???fish??? for bacteria, algae, protozoa and microinvertebrates by placing clean glass microscope slides in an aquatic environment such as aquaria, lakes, streams, showers, the tanks of toilet bowls, and any other site where there is a large or small body of water either standing or flowing.
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