An ephemeris of the planet Neptune for the year 1851

by Walker, Sears Cook
Published 1851

An ephemeris of the planet Neptune for the year 1852/ by Sears C. Walker

by Walker, Sears Cook
Published 1851

[Ephemerides of the planet Neptune for the years 1846, 1847, 1848, and 1849]

by Walker, Sears Cook
Published 1851

An ephemeris of the planet Neptune for the year 1850

by Walker, Sears Cook
Published 1851

Researches relative to the planet Neptune

by Walker, Sears Cook
Published 1851