The universal decimal classification
Subtitle: a programmed instruction course
By: by Hans Wellisch.
Series: Fédération internationale de documentation. FID 467; FID publication ;; 467.
Publisher: School of Library and Information Services, University of Maryland
Published: 1970
Place of publication: [College Park, Md.]
Language: eng
Number of pages: 195
Subjects: Classification, Universal decimal -- Programmed instruction