TY - BOOK AU - DiPaola, Michael F. AU - Hoy, Wayne K. TI - Principals Improving Instruction: Supervision, Evaluation, and professional Development SN - 9780205491025 AV - LB2806.4 .D57 2008 PY - 2008/// CY - Boston PB - Pearson Education KW - School Supervision KW - United States KW - School Principals ER -