possibility of Self-governing Communities creating police forces, as provided for in their respective Statutes of Autonomy and within the framework to be laid down by an organic act.
30. Regulation of the requirements for obtention, issue and standardization of academic degrees and professional qualifications and basic rules for implementation of section 27 of the Constitution, in order to guarantee the fulfilment of the duties of public authorities in this matter.
31. Statistics for State purposes.
32. Authorization of popular consultations through the holding of referendums.
Culture promotion and coordination a duty of the State2. Without prejudice to the competences that may be assumed by the Self-governing Communities, the State shall consider the promotion of culture a duty and an essential function and shall facilitate cultural communication among the Self-governing Communities, in cooperation with them.
Rules for distribution of jurisdiction3. Matters not expressly assigned to the State by this Constitution may fall under the jurisdiction of the Self-governing Communities by virtue of their Statutes of Autonomy. Jurisdiction on matters not claimed by Statutes of Autonomy shall fall with the State, Predominance and suppletory value of State lawwhose laws shall prevail, in case of conflict, over those of the Self-governing Communities regarding all matters in which exclusive jurisdiction has not been conferred upon the latter. State law shall in any case be suppletory of that of the Self-governing Communities.
Section 150
167 SO1. The Cortes Generales, in matters of State jurisdiction, may confer upon all or any of the Self-governing Communities the power to pass legislation for themselves within the framework of the principles, bases and guideli-
