Techniques for the recreational evalution of an area. Transl. from: Vestn. Moskovskogo Univ. 1973, 3, S. 49-54. - Nefedova, V. B.; Smirnova, Ye. D.; Shividchenko, L. G. (My University, 1974)
Keywords: Erholungsraum; Erholungswert