000 00654nam a2200193 a 4500
005 20210219160410.0
008 081103s1953 mx r 000 0 spa d
035 _aUPN01000164840
049 _aUNE
080 _a371.7: 373.2 (100)=20 1953MEN No.9.
245 1 0 _aMental hygiene in the nursery school :
_breport of a joint WHO-UNESCO expert meeting held in Paris : 1951.
260 _aParis :
_bUNESCO,
_c1953.
300 _a33 p.
440 0 _aProblems in education ;
_v9.
690 _aGuarderias infantiles- Salud mental
690 _aEducacion sanitaria- Guarderias infantiles
710 2 _aOrganizaciĆ³n Mundial de la Salud
905 _aUNESCO
999 _c136952
_d136952