I. Notes on Insects Bred From the Bark and Wood of the American Larch. By M. W. Blackman and Harry H. Stage. II. On the Insect Visitors to the Blossoms of Wild Blackberry and Wild Spiraea --A Study in Seasonable Distribution. By M. W. Blackman.
doi 10.5962/bhl.title.40923
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Date
January 1, 1918
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The University,