Distribution of Carex pallidula (Cyperaceae) in Europe Autor Jacob Koopman, Helena Więcław, Marcin Wilhelm

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Chromosome numbers of Carex (Cyperaceae) and their taxonomic implications. Autor Helena Więcław, Anna Kalinka, Jacob Koopman

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Lectotypification of two names of Carex buekii hybrids (Cyperaceae) and notes on their morphology, ecology and distribution Autor Helena Więcław, Radomír Řepka, Jacob Koopman

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Morphological variability of Carex buekii (Cyperaceae) as a function of soil conditions: a case study of the Central European populations Autor Helena Więcław, Beata Bosiacka, Richard Hrivnák, Zygmunt Dajdok, Attila Mesterházy, Jacob Koopman

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Morphological variability and genetic diversity in Carex buxbaumii and Carex hartmaniorum (Cyperaceae) populations Autor Helena Więcław, Magdalena Szenejko, Thea Kull, Zofia Sotek, Ewa Rębacz-Maron, Jacob Koopman

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The first years of «Nature Conservation Research». What has been achieved? Autor Alexander B. Ruchin, Jacob Koopman, Sergey S. Ogurtsov, Oleg G. Grishutkin, Anatoliy A. Khapugin

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