@book{bhlpg30156021, title = {Flora of the U.S.S.R }, volume = {v.5 (1970)}, url = {https://www.biodiversitylibrary.org/page/30156021}, publisher = {Israel Program for Scientific Translations}, author = {Botanicheskiĭ institut (Akademii︠a︡ nauk SSSR) }, year = {1970}, }