Directory of special libraries and information centres
- 5th ed.
- Detroit: Gale Research Company, 1968
- ix, 836p.
Vol.1 (Directory of special libraries and information centres and information centres in the united states and Canada) ; ISBN: 0-8103-0297-7 ; xix, 1279p. Vol.2 (Geographic and personnel indexes); ISBN: 0-8103-0298-5 ; v, 715p.