Book 1 title

<booklist>
   <book type="technical">
      <author>Book 1 author 1</author>
      <author>Book 1 author 2</author>
      <title>Book 1 title</title>
      <isbn>Book1ISBN</isbn>
   </book>
   <book type="fiction">
      <author>Book 2 author 1</author>
      <author>Book 2 author 2</author>
      <title>Book 2 title</title>
      <isbn>Book2ISBN</isbn>
   </book>
   <book type="technical">
      <author>Book 3 author 1</author>
      <author>Book 3 author 2</author>
      <author>Book 3 author 3</author>
      <title>Book 3 title</title>
      <isbn>Book3ISBN</isbn>
   </book>
</booklist>

##</code><code>##

use XML::Parser;

# initialize parser and read the file
$parser = new XML::Parser( Style => 'Tree' );
my $tree = $parser->parsefile( shift @ARGV );

# serialize the structure
use Data::Dumper;
print Dumper( $tree );

##</code><code>##


$VAR1 = [
          'booklist',
          [
            {},
            0,
            '
   ',
            'book',
            [
              {
                'type' => 'technical'
              },
              0,
              '
      ',
              'author',
              [
                {},
                0,
                'Book 1 author 1'
              ],
              0,
              '
      ',
              'author',
              [
                {},
                0,
                'Book 1 author 2'
              ],
              0,
              '
      ',
              'title',
              [
                {},
                0,
                'Book 1 title'
              ],
              0,
              '
      ',
              'isbn',
              [
                {},
                0,
                'Book1ISBN'
              ],
              0,
              '
   '
            ],
            0,
            '
   ',
            'book',
            [
              {
                'type' => 'fiction'
              },
              0,
              '
      ',
              'author',
              [
                {},
                0,
                'Book 2 author 1'
              ],
              0,
              '
      ',
              'author',
              [
                {},
                0,
                'Book 2 author 2'
              ],
              0,
              '
      ',
              'title',
              [
                {},
                0,
                'Book 2 title'
              ],
              0,
              '
      ',
              'isbn',
              [
                {},
                0,
                'Book2ISBN'
              ],
              0,
              '
   '
            ],
            0,
            '
   ',
            'book',
            [
              {
                'type' => 'technical'
              },
              0,
              '
      ',
              'author',
              [
                {},
                0,
                'Book 3 author 1'
              ],
              0,
              '
      ',
              'author',
              [
                {},
                0,
                'Book 3 author 2'
              ],
              0,
              '
      ',
              'author',
              [
                {},
                0,
                'Book 3 author 3'
              ],
              0,
              '
      ',
              'title',
              [
                {},
                0,
                'Book 3 title'
              ],
              0,
              '
      ',
              'isbn',
              [
                {},
                0,
                'Book3ISBN'
              ],
              0,
              '
   '
            ],
            0,
            '
'
          ]
        ];