1990—Subsec. (b)(8). Pub. L. 101–647 substituted “extension” for “extention”.

1979—Subsec. (b)(9). Pub. L. 96–43, § 9(a), added par. (9).

Subsec. (c)(7). Pub. L. 96–43, § 9(b), added par. (7).

Subsec. (f). Pub. L. 96–43, § 9(c), added subsec. (f).