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"Exploring the Universe" Small Particles and the Big Universe PPT Courseware
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City buildings and cartoon police background PPT template
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Cute Pleasant Goat and Big Big Wolf Theme PPT Template
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"The System and Policies of the Qing Dynasty" Consolidation and Development of a Multi-Ethnic Unified Country PPT Courseware 2
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"The Coexistence of Liao, Xixia and Northern Song Dynasty" PPT courseware of the coexistence of multi-ethnic regimes and social changes in the two Song Dynasties
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"The System and Policies of the Qing Dynasty" The Consolidation and Development of a Multi-Ethnic Unified Country PPT Courseware 3
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"Carbon and Its Compounds" Fuel and Combustion PPT Courseware
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"From Three Views to Geometry" Projection and View PPT
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"Changeable Weather" Weather and Climate PPT Courseware 2
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