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Signature	Maker	Instruments	Comments	Location	References
MERZ, G., UND MAHLER	Germany, fl.1839-45, OIM	Telescopes, refracting, large = Franklin Institute, Philadelphia, Pa. (1839), Observatories in Pulkova, Kiev, Washington, D.C., Cincinnatti, Ohio; Heliometers = Observatories in Pulkova and Bonn.	George Merz und Josef Mahler.	Munich.	USNM; RSW.
MERZ, G., UND MAHLER	Germany, fl.1839-45, OIM	Telescopes, refracting, large = Franklin Institute, Philadelphia, Pa. (1839), Observatories in Pulkova, Kiev, Washington, D.C., Cincinnatti, Ohio; Heliometers = Observatories in Pulkova and Bonn.	George Merz und Josef Mahler.	Munich.	USNM; RSW.

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