Okla. Stat. tit. 74, § 775

To the extent that the powers granted hereby may be expressly denied to any legislative committee or committees by the rules or resolutions of the house of the Legislature of which same is a committee, or by joint resolution as to joint committees, Sections 2, 3, and 4 hereof shall not be applicable to said committees. Laws 1959, p. 489, § 5.