000 | 00310nas a22001217a 4500 | ||
---|---|---|---|
003 | USJPLib | ||
008 | 171121b xxu||||| |||| 00| 0 eng d | ||
022 | _a00487333 | ||
041 | _aEng. | ||
245 | _aResearch Policy, Vol. 11 | ||
260 |
_aAmsterdam _bElsevier Science Publishers B.V. _c1982 |
||
942 |
_2ddc _cBP _s1 |
||
999 |
_c145428 _d145428 |