Structural timber, Construction materials, Wood, Strength of materials, Grades (quality), Classification systems, Coniferales, Softwoods, Poplar (wood), Hardwoods, Species identification, Geographic and political divisions, National standards, Visual inspection (testing)
Title in French
Bois de structure. Classes de rsistance. Affection des classes visuelles et des essences
Title in German
Bauholz fr tragende Zwecke. Festigkeitsklassen. Zuordnung von visuellen Sortierklassen und Holzarten