The following definitions are taken from ''[https://www.iso.org/standard/18372.html ISO 10324 : 1997 ''Information and documentation –Holdings statements – summary level''].<br />{''See'' Glossary of terms and definitions in International Standards developed by ISO/TC 46/SC 9 -[http://www.nlc-bnc.ca/iso/tc46sc9/standard/glossary.htmISO/TC 46/SC 9]}