Hierarchical relationships in bibliographic descriptions :
INTERMARC Software-subgroup seminar 4 /
Library systems seminar Essen 25 March - 27 March 1981; contributors: E. Bonness ... [et al.].; edited by: Ahmed H. Helal, Joachim W. Weiss
APA Citation
Weiss, J. W. (Joachim W.)., Helal, A. H. (Ahmed H.)., Bonness, E. (1982). Hierarchical relationships in bibliographic descriptions: INTERMARC Software-subgroup seminar 4. Essen [Germany]: Essen University Library.
MLA Citation
Weiss, J. W. (Joachim W.), A. H. (Ahmed H.) Helal, and E Bonness. Hierarchical Relationships In Bibliographic Descriptions: INTERMARC Software-subgroup Seminar 4. Essen [Germany]: Essen University Library, 1982.
Warning: These citations may not always be complete (especially for serials).