Relation of highway slash to infestations by the western pine beetle in standing
Patterson, J.E.
Relation of highway slash to infestations by the western pine beetle in standing - Washington 1927 - 1-9 p. - United States Department of A .
Relation of highway slash to infestations by the western pine beetle in standing - Washington 1927 - 1-9 p. - United States Department of A .