About the Government of Canada catalogue number

A Government of Canada catalogue number is a unique number that identifies publications produced by the federal government, including each:

Publications that require a catalogue number

Most government departments and agencies must apply for catalogue numbers for their publications, as per the Procedures for publishing Policy.

What a catalogue number looks like

Each part of the catalogue number has a specific meaning. Here is a sample catalogue number: PS84-59/2017E-PDF

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