1. Modern pollen surface samples—an analysis of subsamples;Adam;Journal of Research of the U.S.A. Geological Survey,1975
2. Tree-pollen rain in a mixed deciduous forest in South Jutland (Denmark);Andersen;Review of Palaeobotany and Palynology,1967
3. Pollen analysis of surface samples of vegetation from Arctic Quebec;Bartley;Pollen et Spores,1967
4. Past and Present Vegetation of the Isle of Skye—A Palaeoecological study;Birks,1973
5. Modern pollen rain studies in some arctic and alpine environments;Birks,1973