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註釋A managed program of data collection, storage and retrieval is basic to any systematic analysis of a nation's resources. This is accomplished at EARI by a continuing program of data acquisition involving domestic and foreign travel, national and international purchase and exchange arrangements and intensive collection research. The results of this program are maintained in a working file of selective hard copy material and to a much greater degree in a voluminous research card catalog containing appropriately indexed references to resource data held in other repositories throughout the world. The term natural resources is interpreted to include atmosphere, earth, water, climate, plants and animals individually and in interrelationship. Bibliography is used as any list which is arranged either by subject, or geographically, or in a form which readily reveals this information. It includes lists of research on the grounds that results will be published. Straight author or title lists have been excluded.