V.  K. Rao and K. Rao, S., ?Pearl oysters?, in The commercial molluscs of India, vol. 25, R. V.  Nair and Rao, K. S., Eds. Cochin, India: Central Marine Fisheries Research Institute, 1974, pp. 84-105.

V.  K. Rao and K. Rao, S., ?Pearl oysters?, in The commercial molluscs of India, vol. 25, R. V.  Nair and Rao, K. S., Eds. Cochin, India: Central Marine Fisheries Research Institute, 1974, pp. 84-105.