code: def update_journals(self):
          
          for field in record_get_field_instances(self.record, '773'):
              subs = field_get_subfield_instances(field)
              new_subs = []
              for idx, (key, value) in enumerate(subs):
                  if key == 'p':
                      journal_name = self.get_config_item(value, "journals", allow_substring=False)
                      journal_name = journal_name.replace('. ', '.').strip()
                      new_subs.append((key, journal_name))
                  else:
                      new_subs.append((key, value))
              record_delete_field(self.record, tag="773",
                                  field_position_global=field[4])
              record_add_field(self.record, "773", subfields=new_subs)
docs: 773 journal translations.