Kramer, A.T. 2009. Ecological genetics of Penstemon in the Great Basin, U.S.A. Chicago, IL: University of Illinois at Chicago. Dissertation. 111 p.

Kramer, A.T. 2009. Ecological genetics of Penstemon in the Great Basin, U.S.A. Chicago, IL: University of Illinois at Chicago. Dissertation. 111 p.