Many indexes also use these numbers. First, you'll use an index to identify such an article. Second, you'll use Valley Library Directories to determine if we subscribe to the journal in which that article is published and if so, the call number for that journal. Books, journals, and microfilm are placed on the shelves in call number order. Most indexes can identify contents of many journals but others may only provide information on one or two newspapers or journals.
Directories are a good place to begin.
Useful for determining parent companies, subsidiaries, and divisions. A3 Arranged by SIC number, with alphabetical and geographical indexes. Lists companies that advertise, arranged by industry grouping, with alphabetical index. A subject list of products and their manufacturers. Separate index by company and brand name.