  1977 - National Income and Expenditure (Hardcover) → Paperback, Hardcover ISBN-13: 9780370101651 ISBN-10: 0370101650 ?  1977 - National Income and Expenditure (Paperback) → Hardcover ISBN-13: 9780370101668 ISBN-10: 0370101669 ?  1970 - Mathematical Models of the Economy and Other Essays (Hardcover) ISBN-13: 9780412100307 ISBN-10: 0412100304 ? |
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