As per Fair Dealing Guildeines, you are allowed to copy:
Use of Content that is in the Public Domain
Permission is NOT required. However, public domain does NOT mean publicly available. Content in the public domain is content in which the copyright has expired (in Canada, this is 50 years after an author’s death).
Statutes, Regulations, and Court Decisions
Copying the text of Canadian federal, provincial and territorial statutes, regulations, and judicial decisions is allowed (except for those of Manitoba, Quebec, and Nunavut).
BC Statutes and Regulations are covered by the Queen's Printer License.
Copying U.S. federal government materials is allowed (this material is in the public domain).
What if the work is out-of-print?
If a work is out-of-print, copyright and the Fair Dealing Guidelines still apply. If you wish to use material from an out-of-print work, and the amount you wish to use exceeds the Fair Dealing Guidelines, a request must be made to the publisher for authorization. Contact the Library for assistance.