The role of ant nests in European ground squirrel’s (Spermophilus citellus) post-reintroduction adaptation in two Bulgarian mountains.

The European ground squirrel (Spermophilus citellus) is a vulnerable species, whose populations are declining all by way of its complete

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The benefits to functional ambulation and physical activity of group-based rehabilitation in frail elderly Bulgarians undergoing total knee arthroplasty. Preliminary results.

Frailty is a geriatric syndrome related to elevated vulnerability of older adults. Knee osteoarthritis (OA) is probably the most prevalent

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Study on Galanthus species in the Bulgarian flora.

Genus Galanthus (Amaryllidaceae) consists of 19 species in Europe and the Middle East. The Flora of Bulgaria acknowledges two species: G. nivalis L. and G.

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