Animals without backbones
By: [by] Robert E. Pfadt. Illustrated by Dot Barlowe.
Contributors: Barlowe, Dot, 1926-
Series: Follett beginning science books
Publisher: Follett Pub. Co.
Published: 1967
Place of publication: Chicago
Language: eng
Number of pages: 30
Subjects: Invertebrates -- Juvenile literature.; Invertebrates.
Description: Describes the families of the animal kingdom characterized by the lack of a spinal column.