1.
図書 |
Encyclopaedia Britannica, Inc. ; Istituto geografico de Agostini ; Cole, Ruth Martin
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2.
図書 |
2. World atlas of agriculture (v. 1. Europe, U.S.S.R., Asia Minor - v. 5. Land maps and relief maps)
under the aegis of the International Association of Agricultural Economists, monographs edited by the Committee for the World Atlas of Agriculture
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