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References (back to How Many Pearls) Abbott, T. (1972). Kingdom of the Seashell. Crown Publishers, New York. Lee, M., & Miller, M. (1997). Real Life Math Investigations, Grade 508. Scholastic, Inc., New York. Matlins, A. (1996). The Pearl Book. Gemstone Press, Woodstock, VT. What's Killing the Oysters | Culture of Freshwater Pearls How Many Pearls? | History of Pearls | Resources Teacher's Guide | Transcript | Site Map | Pearl Home Editor's Picks | Previous Sites | Join Us/E-mail | TV/Web Schedule About NOVA | Teachers | Site Map | Shop | Jobs | Search | To print PBS Online | NOVA Online | WGBH © | Updated November 2000 |