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252 to concern itself with such statistics so far as they may be essential for its own purposes or for the improvement of statistics throughout the world.

4. The United Nations shall develop administrative instruments and procedures through which effective statistical co-operation may be secured between the United Nations and the agencies brought into relationship with it.

5. It is recognized as desirable that the collection of statistical information should not be duplicated by the United Nations or any of the specialized agencies whenever it is practicable for any of them to utilize information or materials which another may have available.

6. In order to build up a central collection of statistical information for general use, it is agreed that data supplied to the United Nations Educational, Scientific, and Cultural Organization for incorporation in its basic statistical series or special reports should, so far as practicable, be made available to the United Nations.

1. The United Nations and the United Nations Educational, Scientific, and Cultural Organization recognize the desirability, in the interest of administrative and technical uniformity and of the most efficient use of personnel and resources, of avoiding, whenever possible, the establishment and operation of competitive or overlapping facilities and services among the United Nations and the specialized agencies.

2. Accordingly, the United Nations and the United Nations Educational, Scientific, and Cultural Organization agree to consult together concerning the establishment and use of common administrative and technical services and facilities in addition to those referred to in articles XIII, XIV, and XVI, in so far as the establishment and use of such services may from time to time be found practicable and appropriate.

3. Arrangements shall be made between the United Nations Educational, Scientific, and Cultural Organization in regard to the registration and deposit of official documents.

1. The United Nations Educational, Scientific, and Cultural Organization recognizes the desirability of establishing close budgetary and financial