Zelezova, B 1964: Flora of Bulgaria. Lichens. - Narodna Prosveta, Sofia. 517 pp. [RLL List # 56 / Rec.# 20749] Keywords: BULGARIA/ FLORA/ KEYS
Abstract: 30 colored pl. 100 fig. 103 pl. [Price: 2.28 lv. In Bulgarian. 636 species in 101 genera; keys and descriptions.]