<div class="description">
<dl><dd>Cover title</dd>
<dd>"May 1970."</dd></dl><br>Subjects: Pyrethrins Biodegradation Washington (State) Mount Baker National Forest; Hemlock looper Effect of chemicals on Washington (State) Mount Baker National Forest; Pyrethrins; Hemlock looper</div>
<div class="fn value">
<dl><dd>Mason, Richard R</dd>
<dd>Pacific Northwest Forest and Range Experiment Station (Portland, Or.)</dd></dl></div>
Internet Archive identifier