Acta
Acta Botanica Fennica. -- 113: Early land use, especially the slash-and-burn cultivation in the commune of Lammi, southern Finland, interpreted mainly using pollen and charcoal analyses (1980). -- Helsinki : Societas pro Fauna et Flora Fennica, 1980. -- ISBN : 951-9469-07-9. -- ISSN : 0001-5369.
flóra. fauna. botanika. odborné časopisy
581.9. 591.9. 58. (051)-027.561