Section 3372, Pub. L. 89–754, title X, § 1010 , Nov. 3, 1966 , 80 Stat. 1286 ; Pub. L. 90–448, title XVII, § 1704 , Aug. 1, 1968 , 82 Stat. 603 ; Pub. L. 91–152, title IV , §§ 402, 417, Dec. 24, 1969 , 83 Stat. 395 , 401, related to application of advances in technology to housing and urban development and provided for: statement of purpose and duties of Secretary; objectives of research and studies; execution of research and studies directly or by contract, acquisition of property, and limitation on contracts; authorization of appropriations and availability of funds for expenditures; and limitation of authority under other provisions of law. See sections 1701z–1 to 1701z–4 of Title 12, Banks and Banking. Section 3373, Pub. L. 89–754, title X, § 1011 , Nov. 3, 1966 , 80 Stat. 1287 , related to environmental studies and provided for: Congressional findings and comprehensive program of research, studies, surveys, and analyses; powers and duties of Secretary; advisory committees, functions, personnel, compensation, travel, and other necessary expenses; execution of studies, surveys, research, and analyses directly or by contract, and limitation on contracts; and authorization of appropriations and availability of funds for expenditures. See sections 1701z–1 to 1701z–4 of Title 12, Banks and Banking.