RO16 Win G Winchell,Constance Mabel, 1896- Guide to reference books; 7. ed. based on the Guide to reference books, sixth edition, by Isadore Gilbert Mudge. Chicago, American library Association,1951. xvii, 645 p. 26cm ------- Supplement, 1950-1952, by Constance M. Winchell and Olive A. Johnson. Chicago, 1954. 117p. (continua en la ficha 2)