World Meteorological Organization. (1975). WMO.Technical Note: 138.Drought and agriculture. World Meteorological Organization.
シカゴスタイル引用形World Meteorological Organization. WMO.Technical Note: 138.Drought and Agriculture. Geneva: World Meteorological Organization, 1975.
MLA引用形式World Meteorological Organization. WMO.Technical Note: 138.Drought and Agriculture. World Meteorological Organization, 1975.
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