635.31—Restrictions on sale and purchase.

[64 FR 29135, May 28, 1999, as amended at 67 FR 6201, Feb. 11, 2002; 67 FR 77438, Dec. 18, 2002; 68 FR 715, Jan. 7, 2003; 69 FR 53362, Sept. 1, 2004; 69 FR 67284, Nov. 17, 2004; 71 FR 58173; Oct. 2, 2006; 73 FR 40711, July 15, 2008]