Practical astronomy; a textbook for engineering schools and a manual of field methods
Hosmer, George Leonard.
Practical astronomy; a textbook for engineering schools and a manual of field methods - 3 ed. - New York : Wiley, 1925 - 270 p.
16515
Astronomía esférica y práctica.
522 / H68 1925
Practical astronomy; a textbook for engineering schools and a manual of field methods - 3 ed. - New York : Wiley, 1925 - 270 p.
16515
Astronomía esférica y práctica.
522 / H68 1925