holdings_checkin_record_no 001 bib_record_no 004 oclc_control_no_no_prefix 014 oclc_control_no_w_prefix 035 isbn 020 issn 022 xxxn 024 oan 025 fpi 026 strn 027 pn 028 oscn 029 holdings_identity_field 843 holdings_lib_has_field 866 holdings_symbol_code 852 a location 852 b call_number1 852 h call_number2 852 i internal_note 852 x note 852 z