Pratt, H.S.2010-02-152010-02-151948http://hdl.handle.net/1969.3/25302254 p.The general plan of this book is to allow the non-specialist to identify the common invertebrates, except insects, of the eastern and central portions of the United States and Canada. The analytical tables and descriptions of species of each of the larger groups of animals are preceded by a morphological description of the group together with some account of the habits and distribution of the animals.identification keys; invertebrate zoology; geographical distribution; habitat; animal morphology; behavior; ecological distributionBook