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LOW COST TOOTHPASTE FROM OYSTER SHELLS

Eman Joseph Amuan, Arik Paolo Isaiah C. de la Cruz, Harold Irwin Solis (1998) Philippine Science High School Western Visayas Campus – Department of Science and Technology (DOST-PSHS WVC), Brgy. Bito-on, Jaro, Iloilo City 5000, Philippines ABSTRACT The Philippines being…