The gentian as a factorial element of the vanishing prairie.
Proceedings of the Iowa Academy of Science
© Copyright 1929 by the Iowa Academy of Science, Inc.
"The Ecesis of the Gentian in Relation to Environmental Transition,"
Proceedings of the Iowa Academy of Science, 36(1), 241-241.
Available at: https://scholarworks.uni.edu/pias/vol36/iss1/36