926 resultados para Conservation of forests and aquatic ecosystems


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"October 1936."

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"February 1938."

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Cover title.

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Investigation conducted by the Pacific Northwest forest and range experiment station. cf. p. ii.

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Caption title.

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Description based on: 1938.

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Rev. and supplemented list originally published in Sept., 1937.

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A tax system for Oregon.--Taxation and industrial development.--Electric utilities.--Statement by Representative Giesy concerning the taxation of electric utilities.--Forests and the forest industry.

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Mode of access: Internet.