Joint motion of the States and the United States for entry of a supplemental decree; motion of Fort Mojave Indian Tribe et al. for leave to intervene as indispensable parties; and motion of Colorado River Indian Tribes et al. for leave to intervene are set for oral argument on Monday, October 2, 1978. A total of one and one-half hours allotted for oral argument. [For earlier order herein, see, e. g., 383 U. S. 268.]