@book{ BA24445854, author = "Preobrazhenskiĭ, Vladimir Sergeevich and Krivosheev, V. M. and Institut geografii (Akademii︠a︡ nauk SSSR)", title = "География рекреационных систем СССР", publisher = "Изд-во "Наука"", year = "1980", URL = "https://ci.nii.ac.jp/ncid/BA24445854" }