10. The Government, by regulation, may:(a) withdraw from the application of section 8 such categories of documents as it may indicate;
(b) determine, by category, the documents whereof it is sufficient to deliver a single copy, in addition to those mentioned in section 8;
(c) determine, by category, the documents whereof it is sufficient to deliver a single copy for a limited time, prescribed by the regulation, to enable the chief librarian to make copies thereof;
(d) determine the particulars to be mentioned on any document contemplated in section 8 or in the container of such a document, to indicate that such document has been delivered in conformity with that section and the date when it was so delivered;
(e) in the case of a document the copies of which are not of uniform quality, determine the quality of the copies required to be delivered under section 8.