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By: Dietz, Christian - Schunger, Isabel - Nill, Dietmar - Siemers, B M - Ivanova, TeodoraType: ArticleIn: Historia naturalis bulgaricaVolume: 14Series:Issue:Date: 2002Page Range: 117--121Publication Info: Sofiia, Bulgarska akademiia na naukite, c1989-Subjects: