EGGERS, M. A. (1965). The level of economic activity. Renehart and Winston.
Tohutoru Kātū Chicago (17th ed.)EGGERS, Melvin A. The Level of Economic Activity. New York: Renehart and Winston, 1965.
Tohutoro MLA (9th ed.)EGGERS, Melvin A. The Level of Economic Activity. Renehart and Winston, 1965.
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