LEFT JOIN biblioitems ON biblio.biblionumber = biblioitems.biblionumber

            LEFT JOIN biblioitems ON biblio.biblionumber = biblioitems.biblionumber

    );

    );

    my @bind_params;

    my @bind_params;

    if ($biblionumber) {

    if ($biblionumber) {

        $sqlwhere = "   WHERE biblio.biblionumber=?";

        $sqlwhere = "   WHERE biblio.biblionumber=?";

        push @bind_params, $biblionumber;

        push @bind_params, $biblionumber;