TY - BOOK T1 - The supervisor : new demands, new dimensions A2 - Lucio, William H LA - English PP - Washington PB - Association for Supervision and Curriculum Development YR - 1969 UL - https://colectivo.uloyola.es/Record/L253624 OP - 107 KW - Liderazgo KW - Habilidades directivas KW - Personal : Dirección ER -