Variability characteristics and comparison of Carex arenaria L. and Carex ligerica Gay populations based on rhizome characters by Lech Urbaniak

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A comparison between Carex arenaria L. and Carex ligerica GAY - sedges from the Arenariae group based on leaf characteristics by Lech Urbaniak

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Biometric characters of seeds and wings as markers of geographical differentiation between European scots pine (Pinus sylvestris L.) provenances by Lech Urbaniak

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Morphometric differentiation of Corex ligerica Gay in Poland by Lech Urbaniak

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An interesting chemical polymorphism in Pinus sylvestris L. by Jerzy Szweykowski, Lech Urbaniak

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Studies on phenolic acids variation in Central European Pinus species 1. Five Polish populations of Pinus mugo Turra and some related forms by Tadeusz Krzaczek, Lech Urbaniak

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Variation of morphological needle characters of Scots pine (Pinus sylvestris L.) populations in different habitats by Lech Urbaniak, Leszek Karliński, Remigiusz Popielarz

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Differentiation between Carex arenaria L. populations at the eastern range margin based on female and male glumes variation by Lech Urbaniak, Izabella Maik, Daromiła Urbaniak

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Needle anatomy suggests hybridization between the relict turfosa form of Pinus sylvestris L. from the Gązwa peat bóg and typical Scots pine by Kornelia Polok, Marta Przybyła, Włodzimierz Pisarek, Ewa Chudzińska, Roman Zieliński, Lech Urbaniak

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