Institution: | 1. Natural Resources Institute Finland, Rovaniemi, Finland;2. Laboratory of Chronology, Finnish Museum of Natural History, University of Helsinki, Finland;3. Natural Resources Institute Finland, Vantaa, Finland;1. Botany and Microbiology Department, Faculty of Science, Helwan University, Cairo, Egypt;2. WSL Swiss Federal Institute for Forest, Snow, and Landscape Research, Zürcherstrasse 111, CH-8903, Birmensdorf, Switzerland |