Motion to dismiss the appeal granted and appeal dismissed, without costs. Appellants’ contention that they were entitled to an oral hearing prior to agency rule-making does not raise a substantial constitutional question (see General Tel. Co. of Southwest v. United States, 449 F 2d 846, 863, n. 15 [C. A. 5th] ; Air Line Pilots Assn. v. Quesada, 276 F. 2d 892, 896 [C. A. 2d], adhered to, 286 F. 2d 319, cert. den. 366 U. S. 962; 1 Davis, Administrative Law Treatise, § 7.07, at pp. 434-436).