Raamatud Ferdinand Engel

Axonometrical Projections on the most important geometrical surfaces: Drawings in descriptive geometry. Serving as a catalogue of models executed according to the aforesaid projections, with IX plates

Ferdinand Engel

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A Series of Figures Illustrative of Geometrical Optics: Reduced from Steel Engraving Executed by F. Engel Under the Direction of Professor K. ... Translated from the German of Professor Sc

Ferdinand Engel

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