Ketelmeer, Hanzerak-West, scheepswrak. Projectnummer dendrochronologie (Stich...

Dendrochronological Research Project. The measurement series on which the results are based at present are unavailable. The year in which the research stored in...树木年代学（Dendrochronology）研究项目。当前支撑该研究成果的测量序列暂不可获取。该研究存储于……的年份……