title: Carbon-14 trends in subfossil pine stubs.
abstract: Subfossil pine stubs from a peat bog in the Netherlands were linked together dendrochronologically and sampled at intervals of 30 or 50 years for carbon-14 analysis. The results suggest that the carbon-14 content of the atmosphere was not changing between about 5400 and 5100 B.C., but that it was increasing slightly about 800 years earlier.
authors.forename: J C
authors.initials: JC
authors.lastname: Vogel
authors.forename: W A
authors.initials: WA
authors.lastname: Casparie
authors.forename: A V
authors.initials: AV
authors.lastname: Munaut