def marc_sortable_title
      lambda do |record, accumulator|
        st = Marc21Semantics.get_sortable_title(record)
        accumulator << st if st
      end
    end
def marc_sortable_title
      lambda do |record, accumulator|
        st = Marc21Semantics.get_sortable_title(record)
        accumulator << st if st
      end
    end
245 a and b, with non-filing characters stripped off