In article <[log in to unmask]>, you wrote: >give every item its own =91inventory number=92. Are there libraries who h= >ave=20 >this same obligation, and where in MARC do they place this number? Since=20= Accession numbers used to be very common; in most libraries they have given way to barcode numbers. Some Canadian libraries, and SLC, use 090$e, based on former Utlas/Catss practice. When exporting for a library or museum which shelves by accession number, we export as 852$j, otherwise as 852$p (which is also used for barcode numbers). Field 024 is for other standard numbers, and LC uses it for Asian accession numbers. An individual institution's accession number is not a "standard number", but if your ILS can not handle 852, you could use 024 7 $a<number>$2<your code>. Field 024 is repeating, so that would not prevent your using it for other numbers. __ __ J. McRee (Mac) Elrod ([log in to unmask]) {__ | / Special Libraries Cataloguing HTTP://www.slc.bc.ca/ ___} |__ \__________________________________________________________