32 CFR 1662.28: Publications for sale through the Government Publishing Office.

The public may purchase publications containing information pertaining to the program, organization, functions, and procedures of SSS from the electronic U.S. Government Bookstore maintained by the Government Publishing Office. The publications for sale include but are not limited to:

(a) Title 50, Chapter 49, of the United States Code (the Military Selective Service Act);

(b) Title 32, Subtitle B, Chapter XVI, of the Code of Federal Regulations (Selective Service System Regulations);

(c) Federal Register issues; and

(d) Legal Aspects of the Selective Service System.