Eifert, V. Louise Snider. (1952). Flowers that bloom in the spring: spring comes to Illinois--and with it come wild flowers which are part of the picture of springtime. Fourth printing (Revised) Springfield, Ill.: State of Illinois, Dept. of Registration & Education, Illinois State Museum.MLA Citation
Eifert, Virginia Louise Snider, 1911-1966. Flowers That Bloom In the Spring: Spring Comes to Illinois--and With it Come Wild Flowers Which Are Part of the Picture of Springtime. Fourth printing (Revised) Springfield, Ill.: State of Illinois, Dept. of Registration & Education, Illinois State Museum, 1952.
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