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Gopakumar, S D (2002) Studies on optimum dietary protein requirement for Penaeus semisulcatus de Hann. Journal of the Marine Biological Association of India, 44 (1 & 2). pp. 220-225.
Gopakumar, S D (2004) Culture and nutritional enrichment of the rotifer brachionus rotundiformis (Tschugunoff) for the rearing of marine Fin fish and shrimp larvae (TH 127). ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Cochin University of Science and Technology, Cochin.