21 augusti 2003

Henri D. Grissino-Mayer's Ultimate tree-ring pages. "designed to be the ULTIMATE source for information on the science of Dendrochronology. I've designed these pages to be easily understood by people at all levels of education, from elementary school students to high school students, from first grade teachers to college professors. You won't find anything fancy here - I want these pages to be readable, enjoyable, and (most of all) educational."
Allt om dendrokronologi. Och i snygg förpackning!