Rare Books
A manual of spherical and practical astronomy : embracing the general problems of spherical astronomy, the special applications to nautical astronomy, and the theory and use of fixed and portable astronomical instruments, with an appendix on the method of least squares
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Magnetical instructions for the use of portable instruments : adapted for magnetical surveys and portable observatories, and for the use of a set of small instruments adapted for a fixed magnetical observatory; with forms for the registry of magnetical and meteorological observations
Rare Books
719706