Section 75. The printed copies of all statutes, acts and resolves of the commonwealth, public or private, which are published under its authority, and copies of the ordinances of a city, the by-laws of a town or of the rules and regulations of a board of aldermen, if attested by the clerk of such city or town, shall be admitted as sufficient evidence thereof in all courts of law and on all occasions. Printed copies of rules and regulations purporting to be issued by authority of any department, commission, board or officer of the commonwealth or of any city or town having authority to adopt them, or printed copies of any city ordinances or town by-laws or printed copies of the United States Code Annotated or the United States Code Service and all federal regulations, and the the titles, chapter, subchapters, parts and sections thereof, shall be admitted without certification or attestation, but, if their genuineness is questioned, the court shall require such certification or attestation thereof as it deems necessary.