000 00695nam a2200193 a 4500
005 20210219160515.0
008 081109s1981 mx r 000 0 spa d
035 _aUPN01000167136
049 _aUNE
080 _a371.12/. 13 (100) =201981 LEE.
100 1 _aLeedham, John
245 1 0 _aConditions of employment and status of staff in isntitutions using modern educational techniques /
_cJohn Leedham; André Berruer.
260 _aParis :
_bUNESCO,
_c1981.
300 _a127 p. ;
_blamns.
690 _aCondiciones de empleo de los docentes
700 1 _aBerruer, André, coaut
710 2 _aUNESCO. Division of Structures, Content, Methods and Techniques of Education
905 _aUNESCO
999 _c139247
_d139247