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Keywords from Image Description:
Gauss' Heliotrope. Diagram of heliotrope invented by Gauss google id XvIAAAAIAAJ pg PA dq heliotropefiggaussdate num PPA Elemente der Vermessungskunde by Karl Maximilian von Bauernfeind Published Cotta Screen clipping taken June Screen clipping and image cleanup by Waldir PDArt PDold Germany thumb Heliotrope