. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. IRREGULAR PAGINATION s [Reprinted from The Geographical Review, Vol. XXVI, No. i, January, 1936.] VEGETATION ZONES IN THE CAUCASUS William Seifriz University of Pennsylvania VEGETATION zones as determined by altitude are well marked in certain regions, especially on tropical mountains, but elsewhere they so merge into one another or are so influenced by exposure, precipitation, and glaciation that they cannot be sharply delimited. The latter condition is more typic
. Contributions from the Botanical Laboratory and the Morris Arboretum of the University of Pennsylvania, vol. 13. Botany; Botany. IRREGULAR PAGINATION s [Reprinted from The Geographical Review, Vol. XXVI, No. i, January, 1936.] VEGETATION ZONES IN THE CAUCASUS William Seifriz University of Pennsylvania VEGETATION zones as determined by altitude are well marked in certain regions, especially on tropical mountains, but elsewhere they so merge into one another or are so influenced by exposure, precipitation, and glaciation that they cannot be sharply delimited. The latter condition is more typical of the Caucasus. However, altitude is always a factor to be reckoned with, and, in. 8 4\ V ." ^.. t ~. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original University of Pennsylvania. Botanical Laboratory; University of Pennsylvania. Morris Arboretum. Philadelphia : [s. n. ]
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