$sfd{w} = '(' . $host_field->data() . ')' . $sfd{w};
}
if ( $host_field = $marc_host->field('999') ) {
$sfd{0} = $host_field->as_string('c');
$link_field = MARC::Field->new( 773, '0', ' ', %sfd );
} elsif ( $marcflavour eq 'UNIMARC' ) {
-