TY - BOOK ID - 8703261 TI - Fifteen thousand hours: secondary schools and their effect on children AU - Rutter, Michael AU - Maughan, Barbara AU - Mortimore, Peter AU - ... [et al.] PY - 1980 SN - 0674300254 PB - Cambridge (Mass.) Harvard University Press DB - UniCat KW - High school students KW - High schools KW - Secondary schools KW - Attitudes KW - Education KW - Schools KW - Education, Secondary KW - Students UR - https://www.unicat.be/uniCat?func=search&query=sysid:8703261 AB - ER -