1 Table of Contents: “...Overview, Objectives, Principles, and State-of-the-Art of Natural-Based Wastewater Treatment...”

2 Table of Contents: “...: The State of the Art -- Importance of Forage Mixtures in Increasing Sustainable Food Supply in Egypt...”

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9 Table of Contents: “...Overview, Objectives, Principles, and State-of-the-Art of Engineered-Based Wastewater Treatment...”

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