Coding of the 090 field and its relation to product generation.
Contributors: University of Toronto. Library Automation Systems.
Edition: 2nd ed. --
Series: Technical document / University of Toronto Library Automation Systems -- no. 7; Technical document (University of Toronto.  Library Automation Systems) -- no. 7.
Publisher: University of Toronto Library Automation Systems
Published: 1979
Place of publication: Toronto
Language: eng
Number of pages: 28
Subjects: CATSS.
Notes: Cover title.