Classification
By: by J. McRee Elrod.
Edition: 2d ed.
Series: His Modern library practices series ; no. 3
Publisher: Scarecrow Press
Published: 1978
Place of publication: Metuchen, N.J
Language: eng
Number of pages: 79
Subjects: Classification, Dewey decimal -- Programmed instruction; Classification, Library of Congress -- Programmed instruction