Bibliography


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Barnes, R.D. (1968) Invertebrate Zoology (2nd ed.) Philadelphia: W.B. Saunders Company.

Beck, E. D. Braithwaite, L. F. (1968) Invertebrate Zoology Laboratory Workbook (3rd ed). Minneapolis: Burgess Publishing Company.

Moe, M.A. (1992) The Marine Aquarium Handbook Plantation: Green Turtle Publications.

Pendergrass, W. R. (1980) Carolina Protozoa and Invertebrates Manual Burlington: North Carolina.

Pennisi, E. (1995) Human homologues in the humble hydra. Science News, 147 (1), 15.

Werna, E. et al (2000). Science Voyages. Columbus: Glencoe/ Mc Graw-Hill.

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