Sea urchins /Author: Rake, Jody Sullivan,
Publisher: North Mankato, Minnesota : Capstone Press,
Date: [2016] This title can be found in 4 Iowa libraries.
Starfish, urchins & other echinoderms /Author: Gilpin, Daniel.
Publisher: Minneapolis, MN : Compass Point Books,
Date: 2006. This title can be found in 5 Iowa libraries.
Tiny spiny animals ABC /Author: Schaefer, Lola M.,
Publisher: Chicago Ill. : Heinemann Library,
Date: c2004. This title can be found in 1 Iowa libraries.
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