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<ul>							
<?php
$query = new WP_Query( array(
'post_type' => 'course', //post type slug
'tax_query' => array(
  array(
  'taxonomy' => 'course_type', //taxonomy slug
  'field' => 'slug',
  'terms' => 'post-graduate') //term slug
)) );
if ( $query->have_posts() ) : ?>
  
  <?php while ( $query->have_posts() ) : $query->the_post(); ?>

    <li><a href="<?php the_permalink(); ?>"><?php the_title(); ?></a></li>
  <?php endwhile; wp_reset_postdata(); ?>
<?php endif; ?>
</ul>