This is the seventh in a series of eight reports of a research study for the National Agricultural Library (NAL) on the effective utilization of bibliographic data bases in machine-readable form. The report addresses the problems of converting input data (in source formats) from various sources, both external and internal to NAL, to a common record format (target format) which is that required by the NAL bibliographic system. The problem of designing and implementing software for converting bibliographic data from various source formats to the target format poses no conceptual difficulties, and no hardware compatibility problems are anticipated. It is recommended that the conversion software be organized to make use of a standard interface format. This programing technique in conjunction with the standard system software that is available with third-generation hardware will minimize the clerical and detailed programing work imposed by the conversion problems in the NAL system. (Author/JW)