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：(Standard classification: 333.78/216/0973)
Dealing in diversity : America's market for nature conservation / Victoria M. Edwards
Cambridge [England] : Cambridge University Press , 1995
Wilderness preservation : a reference handbook / Kenneth A. Rosenberg
Santa Barbara, Calif. : ABC-CLIO , c1994. - (Contemporary world issues)
Wilderness preservation : a cross-cultural comparison of Canada and the United States / Marilyn Dubasak
New York : Garland , 1990. - (The Environment : problems and solutions)