There are hereby authorized to be appropriated such sums as may be necessary to carry out the purposes of this subchapter, not to exceed, however, $2,173,000 for the acquisition of lands and interests in lands and not to exceed $1,373,000 for development. The sums authorized in this section shall be available for acquisition and development undertaken subsequent to December 18, 1971.
(Pub. L. 92–207, § 7, Dec. 18, 1971, 85 Stat. 740; Pub. L. 94–578, title I, § 101(4), Oct. 21, 1976, 90 Stat. 2732; Pub. L. 95–625, title I, § 101(5), Nov. 10, 1978, 92 Stat. 3471.)