000 00313nas a22001217a 4500
003 USJPLib
008 171121b xxu||||| |||| 00| 0 eng d
022 _a00487333
041 _aEng.
245 _aResearch Policy, Vol. 25
260 _aAmsterdam
_bElsevier Science Publishers B.V.
_c1996/97
942 _2ddc
_cBP
_s1
999 _c145440
_d145440