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| 035 | ⊔ | ⊔ | ‡asdr-inu299219 |
| 035 | ⊔ | ⊔ | ‡a(OCoLC)26196231 |
| 040 | ⊔ | ⊔ | ‡aGAO ‡cGAO ‡dIUL |
| 090 | ⊔ | ⊔ | ‡aHB1 ‡b.N37 no.4081 |
| 100 | 1 | 0 | ‡aHelpman, Elhanan. ‡w1n |
| 245 | 1 | 0 | ‡aInnovation, imitation, and intellectual property rights / ‡cElhanan Helpman. |
| 260 | 0 | ⊔ | ‡aCambridge, MA : ‡bNational Bureau of Economic Research, ‡c[1992] |
| 300 | ⊔ | ⊔ | ‡a48, [3] p. : ‡bill. ; ‡c22 cm. |
| 490 | 0 | ⊔ | ‡aNBER working papers series ; ‡vworking paper no. 4081 |
| 500 | ⊔ | ⊔ | ‡a"May 1992." |
| 504 | ⊔ | ⊔ | ‡aIncludes bibliographical references (p. 47-48). |
| 538 | ⊔ | ⊔ | ‡aMode of access: Internet. |
| 650 | ⊔ | 0 | ‡aIntellectual property (International law) ‡xEconometric models. |
| 710 | 2 | 0 | ‡aNational Bureau of Economic Research ‡w1n |
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| DAT | 2 | ⊔ | ‡a2024-01-05T18:30:02Z |
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