consolidation of biblio entries for field "reference edition"
replace links to duplicate files with links to correct record sets
change date of creation (1923) to date of publishing (1988) for Philodemi de pietate, pars prior
further consolidations for Philodemi de pietate, pars prior
further consolidations based on same same TLG URN
remove duplicate biblio entries (keep only 83145, 83217, 83283, 83141, 83287, 83108, 83184 for JC to have a look at)