opinion: Per Curiam.
  On this appeal we postponed the question of jurisdiction pending the hearing of the case on the merits. 401 U. S. 906 (1971).
  Having heard the case on its merits, we find that this Court does have jurisdiction (Alabama Teachers v. Alabama Public School and College Authority, 393 U. S. 400 (1969)) and affirm the judgment of the District Court for the Northern District of California. Johnson v. Avery, 393 U. S. 483 (1969).
choices: stay, petition, or motion granted affirmed (includes modified) reversed reversed and remanded vacated and remanded affirmed and reversed (or vacated) in part affirmed and reversed (or vacated) in part and remanded vacated petition denied or appeal dismissed certification to or from a lower court no disposition