search materials(including e-books and e-journals) held by Hokkaido university.
search materials held by universities in Japan.
search information on academic articles published in Japan.
search NDL(National Diet Library) online, NDL Digitized Contents and "Aozora Bunko", materials of a Japanese digital library.
Search keyword：(Author: #United Nations Educational Scientific and Cultural Organization. Natural Resources Research Division)
Geo-ecology of the mountainous regions of the tropical Americas : Geo-ecologia de las regiones montañosas de las americas tropicales / Edited by Carl Troll
Bonn : Dümmler in Kommission , 1968
(Colloquium geographicum ; Bd. 9)