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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