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22![The Douglas-fir, named for David Douglas, a 19th century Scottish botanist, was designated state tree in 1939 The Douglas-fir, named for David Douglas, a 19th century Scottish botanist, was designated state tree in 1939](https://www.pdfsearch.io/img/270e6741c3d9088ad8e692bcd0a271f5.jpg) | Add to Reading ListSource URL: www.oakprairie.comLanguage: English - Date: 2011-09-06 16:16:04
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23![Douglasfir, Pseudotsuga menziesii Alex X. Niemiera, Associate Professor, Department of Horticulture Summary Foliage: About 1 inch long; green to blue-green to gray-green needles; evergreen Douglasfir, Pseudotsuga menziesii Alex X. Niemiera, Associate Professor, Department of Horticulture Summary Foliage: About 1 inch long; green to blue-green to gray-green needles; evergreen](https://www.pdfsearch.io/img/8d1f20586f46ade261de82b66593e79d.jpg) | Add to Reading ListSource URL: www.pubs.ext.vt.eduLanguage: English - Date: 2014-09-09 11:48:02
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24![Microsoft Word - DougFir.doc Microsoft Word - DougFir.doc](https://www.pdfsearch.io/img/9ba60fdeb266a8bf66bb40ca7821ee54.jpg) | Add to Reading ListSource URL: nfs.unl.eduLanguage: English - Date: 2012-07-11 08:45:04
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25![Douglasfir, Pseudotsuga menziesii Alex X. Niemiera, Associate Professor, Department of Horticulture Summary Foliage: About 1 inch long; green to blue-green to gray-green needles; evergreen Douglasfir, Pseudotsuga menziesii Alex X. Niemiera, Associate Professor, Department of Horticulture Summary Foliage: About 1 inch long; green to blue-green to gray-green needles; evergreen](https://www.pdfsearch.io/img/8a0f57c350b772f71dc37680fb96ae40.jpg) | Add to Reading ListSource URL: pubs.ext.vt.eduLanguage: English - Date: 2014-08-07 11:45:00
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26![Forests / Forestry / Coast of British Columbia / Taiga / Picea glauca / Picea mariana / Old-growth forest / Silviculture / Pseudotsuga menziesii var. menziesii / Flora of the United States / Flora / Biogeography Forests / Forestry / Coast of British Columbia / Taiga / Picea glauca / Picea mariana / Old-growth forest / Silviculture / Pseudotsuga menziesii var. menziesii / Flora of the United States / Flora / Biogeography](/pdf-icon.png) | Add to Reading ListSource URL: forestry.alaska.govLanguage: English - Date: 2014-05-02 19:03:55
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27![Pinus aristata Pinus aristata INTRODUCTORY DISTRIBUTION AND OCCURRENCE BOTANICAL AND ECOLOGICAL CHARACTERISTICS Pinus aristata Pinus aristata INTRODUCTORY DISTRIBUTION AND OCCURRENCE BOTANICAL AND ECOLOGICAL CHARACTERISTICS](https://www.pdfsearch.io/img/7614fc8bf94ca99839defb3652f206c4.jpg) | Add to Reading ListSource URL: www.fs.fed.usLanguage: English - Date: 2010-06-21 15:04:28
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28![Plant Fact Sheet WHITE FIR Abies concolor (Gord. & Plant Fact Sheet WHITE FIR Abies concolor (Gord. &](https://www.pdfsearch.io/img/3966f57e3109f10eea846722e89aec4e.jpg) | Add to Reading ListSource URL: plants.usda.govLanguage: English - Date: 2011-08-15 10:39:38
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29![](https://www.pdfsearch.io/img/0716c118fcad1b775a76ddbf8ddaa0da.jpg) | Add to Reading ListSource URL: plants.usda.govLanguage: English - Date: 2011-08-15 10:40:56
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30![](https://www.pdfsearch.io/img/f55ac94532bca21340cbfa38e24b0539.jpg) | Add to Reading ListSource URL: conifercountry.comLanguage: English - Date: 2011-03-24 15:44:44
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