rescue EnjuNdl::InvalidIsbn
          import_result.error_msg = "FAIL[#{row_num}]: "+I18n.t('resource_import_file.invalid_isbn', :isbn => isbn)
          Rails.logger.error "FAIL[#{row_num}]: import_isbn catch EnjuNdl::InvalidIsbn isbn: #{isbn}"
          manifestation = nil
          num[:failed] += 1