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<br />1-2 <br /> <br />Agricultural Research through a contract with C-E-I-R, Inc. Modifications <br />and additions have since been made both through the Economics, Statistics, <br />and Cooperations Service (ESCS) and by the SCS. <br /> <br />(-/ <br /> <br />1.2 COMPUTER REQUIREMENTS <br /> <br />TR-20 is written in FORTRAN IV computer language for an IBM S360 or S370 <br />computer. It has been compiled using the IBM Gl compiler. The subroutine <br />DATE is written in IBM assembler language and is available in a special <br />library for link editing. TR-20 has been adapted to other computer systems. <br /> <br />The program requires about 320 kilobytes of core storage and 3 temporary <br />data files. TR-20 programming documentation is being developed by the <br />SCS Hydrology Unit of the Engineering Technology Development Staff to <br />aid in implementing, understanding, debugging, and modifying the program. <br /> <br />1.3 PROGRAM AVAILABILITY <br /> <br />The TR-20 program may be obtained by others outside the SCS from the <br />National Technical Information Service and is supplied on magnetic tape. <br />Specific information about the data files and sample operating system <br />control language statements used to compile, load, and run the program <br />are on comment statements at the beginning of the magnetic tape listing. <br /> <br />ce <br /> <br />The program is available from: <br />yj <br /> <br />"\ : <br /> <br />,V/ National Technical Information Service <br />U.S. Department of Commerce <br />5285 Port Royal Road <br />Springfield, Virginia 22161 <br /> <br />> <br />"\ <br /> <br />The program is available to Federal Government agencies from: <br /> <br />( <br /> <br />( " <br /> <br />Management Services Staff <br />Soil Conservation Service <br />10000 Aerospace Rd. <br />Lanham, Md. 20706 <br /> <br />!..- <br />"-= <br /> <br />r ' <br /> <br />--., <br />