TY  - BOOK
AU  - Mooi,Rich
TI  - Living and fossil genera of the clypeasteroida (Echinoidea: Echinodermata) 
PY  - 1989///
CY  - Washington
PB  - Smithsonian Institution Press
KW  - Sand dollars
KW  - Identification
N1  - Distributed to depository libraries in microfiche; Includes bibliographical references (p. 50-51)
ER  -