effect of Mt. St. Helens Tephra on the water relations and growth of Verbascum Thapsus L.
By: by Judith Ann Pottmeyer.
Published: 1984
Language: eng
Number of pages: 187
Subjects: Volcanic ash, tuff, etc. -- Environmental aspects -- Washington (State); Volcanic ash, tuff, etc. -- Washington (State) -- Pullman.; Saint Helens, Mount (Wash.) -- Eruption, 1980 -- Environmental aspects.
Notes: Typescript.

Thesis (Ph. D.)--Washington State University, 1984.

Bibliography: leaves 178-187.

WSU:Another copy on microfilm, no. 6421.

WSU:"Department of Botany."