Hi We're using Koha 18.11.04, having biblio records including the correct numbering in MARC 245 $n as well as in 773 $8: ... 245 10 _aMethods in enzymology _n199 _pCumulative subject index - Vol. 168-174, 176-194 ... 773 8 _w38 _8199 ... When sorting a result list in staff client or OPAC by "Title (A-Z)" we get an order like the following: Methods in enzymology : 227 : Metallobiochemistry - Part D Methods in enzymology : 224 : Molecular evolution : producing the biochemical data Methods in enzymology : 217 : Recombinant DNA - Part H Methods in enzymology : 216 : Recombinant DNA - Part G Methods in enzymology : 214 : Carotenoids - Part B Methods in enzymology : 230 : Guide to techniques in glycobiology Methods in enzymology : 199 : Cumulative subject index - Vol. 168-174, 176-194 Methods in enzymology : 235 : Bacterial pathogenesis - Part A But we would want: Methods in enzymology : 199 : Cumulative subject index - Vol. 168-174, 176-194 Methods in enzymology : 214 : Carotenoids - Part B Methods in enzymology : 216 : Recombinant DNA - Part G Methods in enzymology : 217 : Recombinant DNA - Part H Methods in enzymology : 224 : Molecular evolution : producing the biochemical data Methods in enzymology : 227 : Metallobiochemistry - Part D Methods in enzymology : 230 : Guide to techniques in glycobiology Methods in enzymology : 235 : Bacterial pathogenesis - Part A Is there a way to teach Koha/Zebra to sort according to MARC 245 $a, and then according to MARC 245 $n? Best wishes: Michael -- Geschäftsführer · Diplombibliothekar BBS, Informatiker eidg. Fachausweis Admin Kuhn GmbH · Pappelstrasse 20 · 4123 Allschwil · Schweiz T 0041 (0)61 261 55 61 · E mik@adminkuhn.ch · W www.adminkuhn.ch