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ALBURNUM - 2 reference results

For the NATO reporting name for the R-7 Semyorka intercontinental ballistic missile, see SS-6 Sapwood.

Sapwood is the outer layer of wood in a tree, next to the bark. Sapwood will mature into heartwood as the tree grows. See also wood#Heartwood and sapwood. The newer layers are the sapwood, and will stay sapwood for a certain number of years until the tree expands and new sapwood grows over it.

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