Thanks flex for swift reply, below is the code and not sure how to proceed further. 
 use XML::XPath;
 my $xp = XML::XPath->new(filename => 'mathml.txt');
 my $nodeset = $xp->find('/mml:math/*');

 foreach my $node ($nodeset->get_nodelist) {
    $l = XML::XPath::XMLParser::as_string($node),
}

[download]

In reply to Re^2: Want to fetch inner most child element first by dharan
in thread Want to fetch inner most child element first by dharan

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