00438nam a2200157Ia 450000500170000000800410001702000200005808200160007810000170009424500970011126000280020830000080023665000140024494200070025899900150026520260502143204.0260502s9999    xx            000 0 und d  a978-103-2462035  a370.15bHAT  aHattie, John 0aVisible Learning : The Sequel A Synthesis of over 2100 Meta-Analysis Relating to Achievement  bRoutledgeaLondonc2023  a497  aPedagoggy  cBK  c3706d3706