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Excerpt from Observations of Variable Stars: Proefschrift Ter Verkrijging Van Den Graad Van Doctor in De Wis-En Sterrekunde Aan De Rijksuniversiteit Te Leiden, Op Gezag Van Den Rector-Magnificus R. P. Van Calcar, Hoogleeraar in De Faculteit Der GeneskundeDuring the whole time of observation about 13500 obs. Were secured, divided as follows over the different classes.About the PublisherForgotten Books publishes hundreds of thousands of rare and...

Excerpt from Observations of Variable Stars: Proefschrift Ter Verkrijging Van Den Graad Van Doctor in De Wis-En Sterrekunde Aan De Rijksuniversiteit Te Leiden, Op Gezag Van Den Rector-Magnificus R. P. Van Calcar, Hoogleeraar in De Faculteit Der Geneskunde During the whole time of observation about 13500 obs. Were secured, divided as 'follows over the different classes. About the Publisher Forgotten Books publishes hundreds of thousands of r...

Many of the earliest books, particularly those dating back to the 1900s and before, are now extremely scarce and increasingly expensive. We are republishing these classic works in affordable, high quality, modern editions, using the original text and artwork.

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work.This w...

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