TY - BOOK ED - Smithsonian Astrophysical Observatory. ED - Smithsonian Astrophysical Observatory TI - Smithsonian astrophysical observatory star catalog: positions and proper motions of 258, 997 stars for the epoch and equinox of 1950.0, pt. i PY - 1966/// CY - Washington, D. C PB - Smithsonian Institution Press KW - Astronomy and Astrophysics Thesaurus KW - Catalogue-Stars KW - Stars catalogue ER -