| 000 | 00711nam a2200181 a 4500 | ||
|---|---|---|---|
| 005 | 20210219160139.0 | ||
| 008 | 080818s1969 mx r 000 0 spa d | ||
| 035 | _aUPN01000159370 | ||
| 049 | _aUNE | ||
| 080 | _aOC 31: 5.001.5 (100)=20 FRE No.15. | ||
| 100 | 1 | _aFreeman, Christopher. | |
| 245 | 1 | 4 |
_aThe Measurement of scientific and technological activities : _bproposals for the collection of statistics on science and technology on an internationally uniform basis / _cby Christopher Freeman. |
| 260 |
_aParís : _bUNESCO, _c1969. |
||
| 300 |
_a63 p. ; _bil., fot. |
||
| 440 | 0 |
_aStatistical reports and studies ; _v15. |
|
| 690 | _aInvestigacion cientifica - Estadisticas cientificas | ||
| 905 | _aUNESCO | ||
| 999 |
_c131484 _d131484 |
||