000 00682nam a2200217 a 4500
005 20221004063926.0
008 081108s2000 mx r 000 0 spa d
020 _a0850926505 (Commonwealth Secretariat)
020 _a9280312006
035 _aUPN01000165724
049 _aUNE
080 _a371.2 =20 "2000" BRA.
100 1 _aBray, Mark
245 1 0 _aDouble-Shift schooling :
_bDesign and operation for cost-efectiveness/
_cMark Bray.
260 _aParis :
_bUNESCO;
_aLondon :
_aCommonwealth Secretariat,
_c2000.
300 _ail.
690 _aEducación formal
_99094
690 _aTiempo escolar
690 _aCapacitación del personal de educación
905 _aUNESCO
999 _c137836
_d137836