Friedrich, M. (2007). Tree-ring width of Picea abies (Karsten) from historical object sample HOH4292-1. PANGAEA.
Tohutoru Kātū Chicago (17th ed.)Friedrich, Michael. Tree-ring Width of Picea Abies (Karsten) from Historical Object Sample HOH4292-1. PANGAEA, 2007.
Tohutoro MLA (9th ed.)Friedrich, Michael. Tree-ring Width of Picea Abies (Karsten) from Historical Object Sample HOH4292-1. PANGAEA, 2007.
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