by Heinke A. G. Schultz
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Marine animals · Marine animals, juvenile literature
Sea Urchins
1999
Animals, juvenile literature · Animals
Tiny-Spiny Animals ABC (Tiny-Spiny Animals)
2003
Juvenile literature · Sea urchins
Sea urchins
2009
Nervous system · Starfishes
Jelly-fish, star-fish and sea-urchins
1885
Echinodermata · Sea urchins
Hawaiian and other Pacific Echini
1912
The systematics of sympatric species in West Indian spatangoids
1968
The Sea Urchin Embryo
1975
