[12]. Resources & cumulative index. [2]. Birds of the United States and Canada -- [3]. Butterflies of the United States and Canada -- [4]. Fossils of the world -- [5]. Freshwater life of the United States and Canada -- [6]. Insects of the United States and Canada -- [7]. Mammals of the United States and Canada -- [8]. Rocks & minerals of the world -- [9]. Sea shells of the United States and Canada -- [10]. Trees of the United States and Canada -- [11]. Wild flowers of the United States and Canada -- [12]. Resources & cumulative index.
This resource is supported by the Institute of Museum and Library Services under the provisions of the Library Services and Technology Act as administered by State Library of Iowa.