Iran (République islamique de) (1) Family relationships (1) Composition (1) Altitudes (1) Communication (1) Methods (1) Specimens (1) Charts, diagrams, etc (1) Trees (1) Stone (1) Steppes (1) Shrubs (1) Samples (Commerce) (1) Rosaceae (1) Rain and rainfall (1) Oak (1) Maple (1) Hawthorns (1) Grasses (1) Forests and forestry (1) Evidence (1) European hornbeam (1) Communal living (1) Collective settlements (1) Buckthorns (1) Barberries (1) Artemisia (1) Methods (1) Pollen (1) Relations (1)