In addition to Paula Coulthard's response, if the new title
continues the previous title in part or if it is formed by
the union of more than one title, we give a different call
number (mostly different in cutters only) even we only have
ONE new title and ONE previous title in our collection.

Ling-li Chang, Cataloger/Serials, Loyola Univ. Chicago
zlzlb41@luccpua.bitnet