Subject guide to class "Ref" (current reference books) / University Library, Cambridge.

Cambridge : Cambridge University Library, 1973.

6 unnumbered pages, 185 pages ; 22 cm

First published in 1927 under title: List of books in class Ref; published in 1960 under title: Class Ref index and in 1968 under title: Subject guide to class "Ref" (current reference books) in the University Library Cambridge.