%% testisxn.bib:23:Invalid checksum for ISSN 1018-9367 in ``ISSN = "1018-9367"''.
%% testisxn.bib:24:Invalid checksum for ISSN 2080-3863 in ``ISSN = "2080-3863"''.
%% testisxn.bib:25:Invalid checksum for ISSN 3094-3770 in ``ISSN = "3094-3770"''.
%% testisxn.bib:26:Invalid checksum for ISSN 4197-3622 in ``ISSN = "4197-3622"''.
%% testisxn.bib:27:Invalid checksum for ISSN 5346-914X in ``ISSN = "5346-914X"''.
%% testisxn.bib:28:Invalid checksum for ISSN 6346-914X in ``ISSN = "6346-914X"''.
%% testisxn.bib:29:Invalid checksum for ISSN 7362-613X in ``ISSN = "7362-613X"''.
%% testisxn.bib:30:Invalid checksum for ISSN 8891-2513 in ``ISSN = "8891-2513"''.
%% testisxn.bib:31:Invalid checksum for ISSN 9899-7667 in ``ISSN = "9899-7667"''.
%% testisxn.bib:32:Invalid checksum for ISSN 9589-341? in ``ISSN = "X958-9341"''.
%% testisxn.bib:33:Invalid checksum for ISSN 1964-5098 in ``ISSN = "1964-5098"''.
%% testisxn.bib:34:Invalid checksum for ISSN 2047-5974 in ``ISSN = "2047-5974"''.
%% testisxn.bib:35:Invalid checksum for ISSN 3059-5325 in ``ISSN = "3059-5325"''.
%% testisxn.bib:38:Invalid checksum for ISSN 3???-???? in ``ISSN = "3"''.
%% testisxn.bib:39:Invalid checksum for ISSN 30??-???? in ``ISSN = "30"''.
%% testisxn.bib:40:Invalid checksum for ISSN 305?-???? in ``ISSN = "305"''.
%% testisxn.bib:41:Invalid checksum for ISSN 3059-???? in ``ISSN = "3059"''.
%% testisxn.bib:42:Invalid checksum for ISSN 3059-5??? in ``ISSN = "3059-5"''.
%% testisxn.bib:43:Invalid checksum for ISSN 3059-53?? in ``ISSN = "3059-53"''.
%% testisxn.bib:44:Invalid checksum for ISSN 3059-532? in ``ISSN = "3059-532"''.
%% testisxn.bib:45:Invalid checksum for ISSN 3059-5325 in ``ISSN = "3059-5325-X"''.
%% testisxn.bib:45:Invalid checksum for ISSN 3059-5325 in ``ISSN = "3059-5325-X"''.
%% testisxn.bib:598:Invalid checksum for ISBN 1-241-13267-3 in ``ISBN = "1-241-13267-3"''.
%% testisxn.bib:599:Invalid checksum for ISBN 250080221? in ``ISBN = "2 500 8022 1"''.
%% testisxn.bib:600:Invalid checksum for ISBN 3-85331-623-6 in ``ISBN = "3-85331-623-6"''.
%% testisxn.bib:601:Invalid checksum for ISBN 4-913720-72-0 in ``ISBN = "4-913720-72-0"''.
%% testisxn.bib:602:Invalid checksum for ISBN 5-94890-572-7 in ``ISBN = "5-94890-572-7"''.
%% testisxn.bib:603:Invalid checksum for ISBN 694890576X in ``ISBN = "6 948905 76 X"''.
%% testisxn.bib:604:Invalid checksum for ISBN 7-03-063892-5 in ``ISBN = "7-03-063892-5"''.
%% testisxn.bib:605:Invalid checksum for ISBN 80-7008-845-4 in ``ISBN = "80-7008-845-4"''.
%% testisxn.bib:606:Invalid checksum for ISBN 90-70088-45-4 in ``ISBN = "90-70088-45-4"''.
%% testisxn.bib:607:Invalid checksum for ISBN 070216231? in ``ISBN = "X-07-021623-1"''.
%% testisxn.bib:608:Invalid checksum for ISBN 1-0702-6751-0 in ``ISBN = "1-0702-6751-0"''.
%% testisxn.bib:609:Invalid checksum for ISBN 2-07-033508-7 in ``ISBN = "2-07-033508-7"''.
%% testisxn.bib:610:Invalid checksum for ISBN 3-07-039006-1 in ``ISBN = "3-07-039006-1 (hardback), 4-07-039002-9 (paperback)"''.
%% testisxn.bib:610:Invalid checksum for ISBN 4-07-039002-9 in ``ISBN = "3-07-039006-1 (hardback), 4-07-039002-9 (paperback)"''.
%% testisxn.bib:611:Invalid checksum for ISBN 5-07-043109-4 in ``ISBN = "5-07-043109-4"''.
%% testisxn.bib:612:Invalid checksum for ISBN 607-8816-45-9 in ``ISBN = "607-8816-45-9"''.
%% testisxn.bib:613:Invalid checksum for ISBN 7-07-015557-7 in ``ISBN = "7-07-015557-7"''.
%% testisxn.bib:614:Invalid checksum for ISBN 80-8030-713-2 in ``ISBN = "80-8030-713-2"''.
%% testisxn.bib:615:Invalid checksum for ISBN 91-20-79062-9 in ``ISBN = "91-20-79062-9"''.
%% testisxn.bib:616:Invalid checksum for ISBN 121176452? in ``ISBN = "X-12-117645-2"''.
%% testisxn.bib:617:Invalid checksum for ISBN 1-121-17650-9 in ``ISBN = "1-121-17650-9"''.
%% testisxn.bib:618:Invalid checksum for ISBN 2-12-117650-9 in ``ISBN = "2-12-117650-9"''.
%% testisxn.bib:621:Invalid checksum for ISBN 2????????? in ``ISBN = "2"''.
%% testisxn.bib:622:Invalid checksum for ISBN 21???????? in ``ISBN = "2-1"''.
%% testisxn.bib:623:Invalid checksum for ISBN 212??????? in ``ISBN = "2-12"''.
%% testisxn.bib:624:Invalid checksum for ISBN 2121?????? in ``ISBN = "2-12-1"''.
%% testisxn.bib:625:Invalid checksum for ISBN 21211????? in ``ISBN = "2-12-11"''.
%% testisxn.bib:626:Invalid checksum for ISBN 212117???? in ``ISBN = "2-12-117"''.
%% testisxn.bib:627:Invalid checksum for ISBN 2121176??? in ``ISBN = "2-12-1176"''.
%% testisxn.bib:628:Invalid checksum for ISBN 21211765?? in ``ISBN = "2-12-11765"''.
%% testisxn.bib:629:Invalid checksum for ISBN 212117650? in ``ISBN = "2-12-117650"''.
%% testisxn.bib:630:Invalid checksum for ISBN 2-12-117650-9 in ``ISBN = "2-1-211-76509-X"''.
%% testisxn.bib:630:Invalid checksum for ISBN 2-12-117650-9 in ``ISBN = "2-1-211-76509-X"''.
