Page:Compendium of US Copyright Office Practices, II (1984).pdf/574

 1900-15

. (cont'd) are generally remailed one time. If returned again, the certification is destroyed after the CIS image status has been updated to show that the mailing was "undeliverable," in accordance with retention policies established by the Register of Copyrights for those files.

. Certifications are made in four different formats depending on the nature of the material being certified.

. A special certification is required when the reproduction is not exact, e.g. a cassette tape is made from a phonorecord, a photograph is made of a three-dimensional object, a copy is reduced in size from the original deposit, or a copy is made of only part of a larger work (preface only of a book or five pages of a twenty-page document). Such a certificate is issued under the name and title of the

[1998]