Northwest Passage by William Dietrich, Paperback | Indigo Chapters

In this new edition of Northwest Passage , Dietrich updates the status of the mighty Columbia River, discussing the health of its salmon runs, the state of its dams, and the river?s growing importance in light of climate change. For more information about the author go to: http://williamdietrich. com | Northwest Passage by William Dietrich, Paperback | Indigo Chapters