S.  Dharmaraj, Chellam, A., and Velayudhan, T. S., ?Biofouling, boring and predation of pearl oyster?, in Pearl culture. Central Marine Fisheries Research Institute (CMFRI) Bulletin 39, K.  Alagarswami, Ed. Cochin, India: Central Marine Fisheries Research Institute, 1987, pp. 92-97.

S.  Dharmaraj, Chellam, A., and Velayudhan, T. S., ?Biofouling, boring and predation of pearl oyster?, in Pearl culture. Central Marine Fisheries Research Institute (CMFRI) Bulletin 39, K.  Alagarswami, Ed. Cochin, India: Central Marine Fisheries Research Institute, 1987, pp. 92-97.