Media type: E-Article Title: Seasonal Variation in Composition of Birch Leaves Contributor: Tamm, Carl Olof imprint: Wiley, 1951 Published in: Physiologia Plantarum Language: English DOI: 10.1111/j.1399-3054.1951.tb07683.x ISSN: 0031-9317; 1399-3054 Keywords: Cell Biology ; Plant Science ; Genetics ; General Medicine ; Physiology Origination: Footnote: