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<font size="-2" face=verdana> <b>Catalog Number:</b>&nbsp;

...
<c>
$results=~ /(Catalog Number:)/;
if($1) {print "$1\n";} else {print "nothing\n";};

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$results=~ /(Catalog Number)/;
if($1) {print "$1\n";} else {print "nothing\n";};