View all text of Subchapter XXIV [§ 221 - § 228j]
§ 228b. Composition of park
(a) Additional lands, waters, and interests therein
(b) Abolition of Grand Canyon and Marble Canyon National Monuments
(c) Study and report to Congress of suitability of lands included within enlarged boundaries; submission date
(Pub. L. 93–620, § 3, Jan. 3, 1975, 88 Stat. 2090.)