Wild tobaccos (Nicotiana trigonophylla dunal and nicotiana attenuata torrey) as
Marsh, C.D., Clawson, A.B., Roe, G.C.
Wild tobaccos (Nicotiana trigonophylla dunal and nicotiana attenuata torrey) as - Washington 1927 - 1-22 p. - United States Department of A .
Wild tobaccos (Nicotiana trigonophylla dunal and nicotiana attenuata torrey) as - Washington 1927 - 1-22 p. - United States Department of A .