PZ numbers are reserved for the Juvenile Collection. Do not use. Reserved for National Library of Canada. Z 1000 through Z 7999 are classed with the subjects in other parts of the schedules. Z 4 through Z 1039 are ok.
Information resources are ok.
Prefer classification with the subject in other parts of the schedules. Prefere classification with the subject in other part of the schedules. Prefer classification with the subject in other parts of the schedules. Prefer classification in particular subject area.