Report copyright - Exploring and Comparing the Performance of Search Engines ...stim.qom.ac.ir/article_1415_c0c12fcff81280482718d725f17e831f.pdf · 15 ﻲﭘﺎﻴﭘ هرﺎﻤﺷ 1398 نﺎﺘﺴﺑﺎﺗ
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