TY - BOOK T1 - Close Binary Systems A1 - Kopal, Zdenek LA - English PP - New York PB - John Wiley & Sons YR - 1959 UL - http://vufind10-pruebas.sigbunlp.bibliotecas.unlp.edu.ar/Record/das.2457 OP - 558 KW - AstrofĂ­sica y AstonomĂ­a Descriptiva ER -