Electro astronomical atlas ... with explanatory notes, questions and answers (1874)
Spoor, J. W. (Joseph W.) · Albany, N.Y., Weed, Parsons and Company · leaf 13
m … INTRODUCTION Accompanying this work is a Diagram, which, at the time of recitation, when necessary,can be spread open before the pupils that they may the more clearly apprehend the instruc-tion imparted by it. A description of its design and use will now be given : The object of this is to aid the…
Astronomy
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
