search query: @author Ladd, H. F. / total: 1
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| title | year | author | ||
| 1. |
American Economic Review
1982 : MAY, VOL. 72:2, p. 166-170 |
1982 | Ladd, H. F. |
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| title | year | author | ||
| 1. |
American Economic Review
1982 : MAY, VOL. 72:2, p. 166-170 |
1982 | Ladd, H. F. |