Utrecht, Oudegracht 240. Projectnummer dendrochronologie (Stichting RING): 19...

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...树轮年代学研究项目。存储于https://dataverse.nl/dataverse/stichtingring中的该项研究，其1985年及之后的实施年份信息可于……中查阅到。