Guide to the ecological systems of Colorado - Anderson, Dave, author; Doyle, Georgia, author; Handwerk, Jill, author; Huggins, Janice, author; Kettler, Steve, author; Lyon, Peggy, author; Neid, Stephanie, author; Smith, Pam, author; Spackman-Panjabi, Susan, author; Colorado Natural Heritage Program, publisher (Colorado State University. Libraries, 2020)