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emad-ali-dahan-wahas-36312881
Question added by Emad Ali Dahan wahas, Secretary, Agriculture and Irrigation Office - 7 years ago

كيق يقلل الانسان من المواد المستهلكه للنفظ واستبدالها بمواد بديله ؟

Material Sourcing

Nanomaterials

Petroleum Engineering

Engineering

Hazardous Materials

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