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1Subjects: “...Computer, administrative functions, school leaders and the assistant, Sharurah governorate...”
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2“..., The research design used in this study was the pretest-posttest control group design. In collecting data...”
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3“... in the apical part of canals. Materials and Methods: 50 sound human teeth can instrumented by using a rotary...”
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4by Yahya M. Abu Jahjouh“...) and the other as control group (n= 53). The researcher designed three instruments: a 24- multiple choice...”
Published 2014-01-01
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