000 00620nam a2200193 a 4500
005 20221101063555.0
008 080610s1982 mx r 000 0 spa d
020 _a9231020714
035 _aUPN01000156752
049 _aUNE
080 _aOC 058.7: 002.6: 061.6 (100) =20 INF.
245 0 0 _aInformation services on research in progress :
_ba worldwide inventory /
_ced. by the Smithsonian Science Information Exchange.
260 _aParís :
_bUNESCO,
_c1982.
300 _a320 p.
690 _aInvestigación científica
_96034
690 _aServicios de información
_97892
710 2 _aUNESCO
905 _aUNESCO
999 _c128866
_d128866