In SLC's database of over 300,000 records, over 169,000 have no ISBN, over 114,000 have one, over 19,000 have two, and the number of ISBNs ranges up to 36 in one record. For us, Instances can't be based on ISBNs. Total Records: 315389 020s Records 00 169021 01 114221 02 19745 03 7403 04 3238 05 1149 06 344 07 118 08 29 09 42 10 11 11 16 12 10 13 12 14 4 15 5 16 3 17 7 18 1 19 1 21 1 22 1 23 1 25 3 27 1 28 1 36 1 __ __ J. McRee (Mac) Elrod ([log in to unmask]) {__ | / Special Libraries Cataloguing HTTP://www.slc.bc.ca/ ___} |__ \__________________________________________________________