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The Sun by C. A. Young
The Sun by C. A. Young
The achromatic telescope, and its various mountings, especially the equatorial to which are added some hints on private Observatories
The achromatic telescope, and its various mountings, especially the equatorial to which are added some hints on private Observatories
Microscopy the construction theory and use of the microscope
Microscopy the construction theory and use of the microscope
Les observatoires astronomiques et les astronomes supplement
Les observatoires astronomiques et les astronomes supplement