Found 14 results
Author Title Type [ Year(Asc)]
Filters: First Letter Of Title is H  [Clear All Filters]
2012
Christy JA.  2012.  Habitat Changes in the Region, 1850-2010. Biodiversity Guide for the Greater Portland-Vancouver Region. :17-21.
2002
Christy JA.  2002.  Historic vegetation of the Tualatin River Basin.. Exploring the Tualatin River Basin: a Nature and Recreation Guide.. :144.