Here are entered works on organizations that provide information services. Works on sources of information in general, not limited to a specific format or medium, including works that list organizations other than information services as sources of information, are entered under Information resources. Works on sources of information in a specific format or medium are entered under the heading for the format or medium. --subdivision Information services under names of countries, cities, etc., individual persons, and corporate bodies, and under classes of persons, ethnic groups, military services, and topical headings
This heading may be further subdivided by the topic of the system, e.g., Information storage and retrieval systems--Accounting; Information storage and retrieval systems--Africa
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