1. Chemical analysis;Allen,1976
2. Silica in Timbers;Amos,1952
3. The relative pollen productivity and pollen representation of North European trees, and correction factors for tree pollen spectra;Anderson;Danmarks Geologiske Undersaegelse, Raekke,1970
4. A testimony of prehistoric tasks: Diagnostic residues on stone tool working edges;Anderson;World Archaeology,1980
5. Scanning electron microscopy of silicophytoliths from the Okefenokie swamp-marsh complex;Andrejko,1984