| 000 | 00669nam a2200193 a 4500 | ||
|---|---|---|---|
| 005 | 20240924065559.0 | ||
| 008 | 991125s1952 gin 000 0 eng u | ||
| 035 | _aUPN01000055498 | ||
| 049 | _aCG | ||
| 050 | 4 |
_aL10 _bI69 no.139 |
|
| 111 | 2 |
_aInternational conference on Public Education _n(15a : _d1952 : _cGeneva, Suiza) |
|
| 245 | 1 | 0 | _aTeaching of natural science in secundary schools. |
| 260 |
_aGeneva : _bInternational Bureau of Education, _c1952. |
||
| 300 | _a216 p. | ||
| 440 | 0 |
_aBureau International d'Education. _pPublication ; _v139 |
|
| 650 | 4 |
_aCiencias naturales _xEstudio y enseñanza (Secundaria) _97979 |
|
| 650 | 4 |
_aEducación _9682 |
|
| 905 | _aLibro | ||
| 999 |
_c55498 _d55498 |
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