TY  - BOOK
AU  - Chesher,Richard H.
TI  - The systematics of sympatric species in West Indian spatangoids: a revision of the genera Brissopsis, Plethotaenia, Paleopneustes, and Saviniaster 
PY  - 1968///
CY  - Coral Gables
PB  - University of Miami Press
ER  -