00674cam a22002417a 4500003000500000005001700005008004100022010001000063011001000073035001000083040000900093082001500102100002100117245003800138260003800176300001100214490004300225650004000268650003200308700002800340700002100368830004300389CHAP20220329140048.0971013s1981 r 00010 d a46408 a47380 a51522 cCHAP a025.52bT400aThomas, Diana M.14aThe effective reference librarian aNew York :bAcademic Press,c1981 a214 p. 0aLibrary and information science series14aServicios de consulta (bibliotecas)14aServicios de informacioĢn.0 aEisenbach, Elizabeth R.0 aHinckley, Ann T.0 aLibrary and information science series