00337nam a2200133 4500 u3764 SIRSI 20250825174931.0 221011n 000 0 eng u 8471336308 370.008 D3521l 1999 Delgado, Manuel Lorenzo El liderazgo educativo en los centros docentes 2338 2338 2026-03-12 00:00:00 005246 370.008 D3521l 1999 005246 1 2025-08-25 BOOK 0 0 0 COL_GRAL 0 BCENTRAL BCENTRAL 2022-10-11