uri is defined in bib1.att, but url is not
@ -274,7 +274,7 @@ melm 952$q onloan:n,onloan:w
melm 952$r datelastseen
melm 952$s datelastborrowed
melm 952$t copynumber
#melm 952$u uri:u,url:w
melm 952$u uri:u
melm 952$v replacementprice
melm 952$w replacementpricedate
#melm 952$x