Groningen Aquamarijnpad (de held III), waterput. Projectnummer dendrochronolo...

Dendrochronological research project. The year in which the research stored in https://dataverse.nl/dataverse/stichtingring took place, from 1985 onwards can be found in the...树木年代学（Dendrochronology）研究项目。存储于https://dataverse.nl/dataverse/stichtingring中的该项研究，其自1985年起的开展年份相关信息可在……中查阅到。