<div class="description">
<p>Includes bibliographical references (p. 2)
</p>
<br>Subjects: Black-capped chickadee; English sparrow; Gypsy moth Biological control United States</div>
<div class="fn value">
<dl><dd>Podgwaite, J. D</dd>
<dd>Galipeau, P. R</dd>
<dd>Northeastern Forest Experiment Station (Radnor, Pa.)</dd>
<dd>United States. Forest Service</dd></dl></div>
Internet Archive identifier