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Excerpt from Insect Enemies of the Opine in the Black Hills Forest Reserve: An Account of Results of Special Investigations, With Recommendations for Preventing LossesWork of the pine-destroying beetle of the Black Hills. Fig. 1. A, Primary galleries, larval mines, pupa cases, and exit holes; B, Primary galleries grooved in surface of wood in chip cut from railroad tie.

Title : Insect Enemies of the Opine in the Black Hills Forest Reserve: An Account of Results of Special Investigations, with Recommendations for Preventing Losses (Classic Reprint)
Author : Andrew Delmar Hopkins
Language : en
Rating :
4.90 out of 5 stars
Type : PDF, ePub, Kindle
Uploaded : Apr 03, 2021

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