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Show I: Silent Spring" hninar Set Students are invited to hear the I ntroversial issue of pesticides 'scussed at a graduate seminar, pday at 11 a.m. in Room 308 of !e Biology Building. lEDEAN M. ANDERSEN, working t';r his Ph.D. in zoology and en-kmology, en-kmology, will deliver a thesis envied, en-vied, "Silent Spring: One Year r'lter," which will deal with some 'he problems raised in Rachel irson's provocative book on pesti--s, "Silent Spring." Mr. Andersen will discuss the w for pest control, the problems :fl dangers involved in their ap-"jation, ap-"jation, and how cooperative ef-" ef-" by various groups that use i. icides, have, and can accomplish I. control with the least harmful |