diversité biologique (1) ressources (1) littérature (1) sylviculture (1) agriculture (1) Égypte (1) Département du Nord (1) Development (1) Composition (1) Assaying (1) Agriculture (1) Methodology (1) Identification (1) Charts, diagrams, etc (1) Land degradation (1) Biodiversity (1) Sustainable agriculture (1) Worms (1) Values (1) Tunisians (1) Rural poor (1) Production (Economic theory) (1) Principal components analysis (1) North (The word) (1) Multivariate analysis (1) Manufacturers' agents (1) Literature (1) Licenses (1) Hypothesis (1) Forests and forestry (1)