<div class="description">
<dl><dd>"September 1985"--P. iii</dd>
<dd>Cover title</dd>
<dd>Bibliography: p. 26</dd></dl><br>Subjects: Agricultural pollution Pennsylvania Mathematical models; Manures; Soil erosion Pennsylvania; Water Pollution Pennsylvania</div>
<div class="fn value">
<dl><dd>Crowder, Bradley M</dd>
<dd>Young, C. Edwin (Chester Edwin), 1948-</dd>
<dd>United States. Department of Agriculture. Natural Resource Economics Division</dd></dl></div>
Internet Archive identifier