books.google.de - Describes the ecosystem of the Douglas fir, the old growth forests of the Pacific Northwest, the effects of human activities on them, and efforts to protect them....http://books.google.de/books/about/Life_in_an_Old_Growth_Forest.html?hl=de&id=hV7--z-l8JEC&q=deer+lettuce&utm_source=gb-gplus-shareLife in an Old Growth Forest
