Apr 12, 2016
Plankton - Nordsee 1932 by Picturepest Via Flickr: Historisches Präparat von 1932, Planktonprobe aus der Nordsee bei Helgoland. 100x vergrößert (Negativbild, Solarisationsfilter)
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Plankton - Nordsee 1932 by Picturepest Via Flickr: Historisches Präparat von 1932, Planktonprobe aus der Nordsee bei Helgoland. 100x vergrößert (Negativbild, Solarisationsfilter)
Zwiebelhäutchen Luftblasen neg by Picturepest on Flickr.