To facilitate respect for the professional contribution of the reporting institution as well as to prevent duplication of effort and to maximize the cost effectiveness of the cooperative effort, the basic philosophy of the conversion process is acceptance of previous work. Only those changes that are necessary to update the record to LC standards are to be made. If there is any doubt as to whether or not a change should be made - DO NOT MAKE IT!! However, the scope of changes and revisions should ensure compatibility and previously cataloged editions of the same works as well as directly analogous works issued by the same body.

See also:

Appendix C. NUC to DLC