Douglas-Fir Cone and Seed Insect Research: Progress Report, 1959 (Classic Reprint) - Tapa dura

Sinopsis

Excerpt from Douglas-Fir Cone and Seed Insect Research: Progress Report, 1959

Data were Obtained on the attack periods of the various insects, on the relative amounts of damage caused by each species, and on the intensity of interspecific competition. The data obtained about the attack periods of the insects corroborates the information obtained by cone dissections.

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