<div class="description">
Subjects: Ichneumonidae; Trees</div>
<bdi><a href="https://en.wikipedia.org/wiki/en:Julius_Theodor_Christian_Ratzeburg" class="extiw" title="w:en:Julius Theodor Christian Ratzeburg"><span title="German entomologist (1801–1871)">Julius Theodor Christian Ratzeburg</span></a>
</bdi>
<dl><dd><a rel="nofollow" class="external free" href="https://archive.org/details/dieichneumonende03ratz">https://archive.org/details/dieichneumonende03ratz</a></dd>
<dd><a rel="nofollow" class="external free" href="https://archive.org/download/dieichneumonende03ratz/dieichneumonende03ratz.pdf">https://archive.org/download/dieichneumonende03ratz/dieichneumonende03ratz.pdf</a></dd></dl>