Petar Beron

Petar Beron's books

Caves and Speleology in Bulgaria

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Biodiversity of Western Rhodopes Bulgaria and Greece: Biodiversity of Bulgaria

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Acarorum Catalogus 1: Acariformes: Calyptostomatoidea Calyptostomatidae, Erythraeoidea Smarididae, Erythraeidae

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Biodiversity of Eastern Rhodopes: Bulgaria and Greece. Biodiversity of Bulgaria, Volume 2.

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Zoogeography of Arachnida (Monographiae Biologicae, 94)

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Acarorum Catalogus

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Acarorum Catalogus

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High Altitude Isopoda, Arachinida & Myriapoda in the New World

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