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An old, yellowed notebook page with handwritten notes, mathematical formulas, and diagrams.

An old, yellowed notebook page with handwritten notes, mathematical formulas, and diagrams.

Nur ein alter gilber Notizzettel, matheheft, mit handschriftlich Schrift "Marking dynamos for repair" , "Someone sucking me dry..."; hintergrund etwas elektrotechnsche Mathematik wie Hysteresekurve dreieck kreise egal Ver más

#education #science #vintage

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