3 treff

A field guide to Pacific States wildflowers : field marks of species found in Washington, Oregon, California, and adjacent areas :
text by Theodore F. Niehaus ; ill. by Cha...
Bok Engelsk 1976
Sierra wildflowers : Mt. Lassen to Kern Canyon
by Theodore F. Niehaus
Bok Engelsk 1974
A biosystematic study of the genus Brodiaea <Amaryllidaceae)
Niehaus, Theodore F.
Bok Engelsk 1971