The court now being fully advised, the petition for rehearing filed July 24, 1975, is *522allowed; the opinion filed July 1, 1974 (500 F.2d 313), is withdrawn; and the judgment of the district court is affirmed on the, authority of United States v. Martinez-Fuerte et al., -U.S.-, 96 S.Ct. 3074, 49 L.Ed.2d 1116 (1976), reversing 514 F.2d 308 (9th Cir. 1975).