; 5 U.S.C. App.) and section 1337 of the Agriculture and Food Act of 1981 ( Public Law 97–98 ). Office of the general counsel For necessary expenses of the Office of the General Counsel, $44,846,000. Office of ethics For necessary expenses of the Office of Ethics, $4,136,000. Office of the under secretary for research, education, and economics For necessary expenses of the Office of the Under Secretary for Research, Education, and Economics, $800,000: Provided , That funds made available by this Act to an agency in the Research, Education, and Economics mission area for salaries and expenses are available to fund up to one administrative support staff for the Office. Economic research service For necessary expenses of the Economic Research Service, $86,757,000. National agricultural statistics service For necessary expenses of the National Agricultural Statistics Service, $173,717,000, of which up to $45,350,000 shall be available until expended for the Census of Agriculture: Provided , That amounts made available for the Census of Agriculture may be used to conduct Current Industrial Report surveys subject to 7 U.S.C. 2204g(d) and (f). Agricultural research service Salaries and expenses For necessary expenses of the Agricultural Research Service and for acquisition of lands by donation, exchange, or purchase at a nominal cost not to exceed $100, and for land exchanges where the lands exchanged shall be of equal value or shall be equalized by a payment of money to the grantor which shall not exceed 25 percent of the total value of the land or interests transferred out of Federal ownership, $1,259,916,000, of which $10,000,000 shall remain available until expended to carry out the science program of the National Bio and Agro-Defense Facility located in Manhattan, Kansas: Provided , That appropriations hereunder shall be available for the operation and maintenance of aircraft and the purchase of not to exceed one for replacement only: Provided further , That appropriations hereunder shall be available pursuant to 7