Planetary co-ordinates for the years 1940-1960  referred to the equinox of 1950 
Nautical Almanac Office                        
 - London  Her Majesty's Stationary Office  1939 
 - xvi, 150p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Almanac ephements<br/>Astronomy and Astrophysics Thesaurus<br/>Equinox<br/>Planetary Tables
<br/><br/><label>Universal Decimal Class. No.: </label>52(083)  / HMN