Echo all Subjects

If I am following this paradigm:
<?php echo item('Dublin Core', 'Subject'); ?>

Detailed here:
http://omeka.org/forums/topic/reordering-individual-metadata-fields

http://omeka.org/forums/topic/order-of-meta-data-fields-in-item-display

to display a subject. How do I display all subjects?

<?php
$subjects = item('Dublin Core', 'Subject', 'all');

if (count($subjects) > 1):

?>

<h3>Subjects</h3>
<ul class="subject-list">
<?php foreach ($subjects as $subject): ?>
<li class="subject">
<?php echo $subject; ?>

<?php endforeach; ?>

<?php endif; ?>

Thanks, Aodiorne. Very helpful.

Stephen