Sentence:  There are authorized to be appropriated such sums , to remain available until expended , as may be necessary , but not more than $ 75000000 in all , ( a ) to carry out the provisions of this Act during the fiscal years 1962 to 1967 , inclusive ; ( b ) to finance , for not more than two years beyond the end of said period , such grants , contracts , cooperative agreements , and studies as may theretofore have been undertaken pursuant to this Act ; and ( c ) to finance , for not more than three years beyond the end of said period , such activities as are required to correlate , coordinate , and round out the results of studies and research undertaken pursuant to this Act : Provided , That funds available in any one year for research and development may , subject to the approval of the Secretary of State to assure that such activities are consistent with the foreign policy objectives of the United States , be expended in cooperation with public or private agencies in foreign countries in the development of processes useful to the program in the United States : And provided further , That every such contract or agreement made with any public or private agency in a foreign country shall contain provisions effective to insure that the results or information developed in connection therewith shall be available without cost to the United States for the <WSD>use</WSD> of the United States throughout the world and for the use of the general public within the United States . 
Meaning of the word marked with <WSD> tags:  the act of using