Hello! The search by "physical representation" does not work if the subfields 182 of the Unimarc field are filled in. It works if you fill out 106, but these subfields are outdated. 106 CODED DATA FIELD: TEXTUAL RESOURCE - FORM OF ITEM $a Form of resource Item: Coded Data:Medium Designator i = multimedia (e.g. a resource an item in regular print with a microfiche supplement) (obsolete) This code is replaced by field 182 Coded Data Field - Media type, $a/0 code "m"= "multiple media". s = electronic (obsolete) This code is replaced by field 182 Coded Data Field - Media type, $a/0 code "b"= "electronic". To be used when resource Item is intended for manipulation by a computer. The resource item may reside in a carrier accessed either directly or remotely, in some cases requiring the use of peripheral devices attached to the computer. This code is not used for items that do not necessarily require the use of a computer (e.g. music compact discs, videodiscs). t = microform (obsolete) This code is replaced by field 182 Coded Data Field - Media type, $a/0 code "c"= "microform". https://cdn.ifla.org/wp-content/uploads/files/assets/uca/unimarc_updates/BIB... https://cdn.ifla.org/wp-content/uploads/files/assets/uca/unimarc_updates/BIB... https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=34919 Good Luck! Igor A. Sychev Tomsk Polytechnic University https://lib.tpu.ru