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Hemambika, M (1989) Studies on the digestive enzymes of the indian white prawn Penaeus indicus H Milne Edwards. ["eprint_fieldopt_thesis_type_phd" not defined] thesis, Central Marine Fisheries Research Institute. Submitted to Cochin University of Science and Technology.
Jayasankar, P (1989) Development of oocytes to maturity. In: Summer institute in recent advances on the study of marine fish eggs and larvae, 14 June - 3 July 1989, Kochi.
Jayasankar, P (1989) Some observations on the biology of the blotched Croaker Nibea maculata (schneider, 1801) from Mandapam. Indian Journal of Fisheries, 36 (4). pp. 299-305.
Paulraj, R (1989) Development of artificial feeds for finfishes. CIBA Special Publication, 2. pp. 229-258.