| 000 | 00642pam a2200181a 44500 | ||
|---|---|---|---|
| 999 |
_c88369 _d88369 |
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| 008 | 170807b2011 xxu||||| |||| 00| 0 eng d | ||
| 100 | _aLampe, Ryan L | ||
| 110 | _aNational Bureau of Economic Research | ||
| 245 |
_aPatent pools and the direction of innovation : _bEvidence from the 19th-century sewing machine industry / _cRyan L. Lampe and Petra Moser |
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| 260 |
_aCambridge _bNBER _c2011 |
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| 300 | _a36p | ||
| 490 |
_aNBER Working Paper ; _v17573 |
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| 650 | _aNBERWP 17573 | ||
| 650 | _aE6778.pdf | ||
| 700 | _aMoser, Petra | ||
| 856 | _uhttp://elibrary.igidr.ac.in/e-library/working papers/NBER/2011/E6778.pdf | ||
| 942 |
_2ddc _cE |
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