Figure 2 from The structure of Norway spruce (Picea abies [L.] Karst.) stems in relation to wood properties of sawn timber | Semantic Scholar
Red Spruce | The Wood Database (Softwood)
File:Norway spruce (Picea abies) trunk cross section.png - Wikipedia
Annual rings; spruce; picea; abies; Norway spruce; annual ring; ring of wood Stock Photo - Alamy
Timber industry: Norway spruce trunks in a forest of the Franche-Comte department (central-eastern France) ready to be loaded, for the production of p Stock Photo - Alamy