On-line library and network systems : symposium held at Dortmund Univ., March 22 - 24, 1976 / organized by E. Edelhoff ... [et al.] ; ed. by E. Edelhoff and K.-D. Lehmann. (Zeitschrift für Bibliothekswesen und Bibliographie ; Sonderheft : 23)
On-line library and network systems : symposium held at Dortmund Univ., March 22 - 24, 1976 / organized by E. Edelhoff ... [et al.] ; ed. by E. Edelhoff and K.-D. Lehmann.
(Zeitschrift für Bibliothekswesen und Bibliographie ; Sonderheft : 23)