TY - BOOK ID - 127655135 TI - Origins of psychometry : Johan Jacob de Jaager student of F.C. Donders on Reaction time and mental processes (1865) AU - De Jaager, Johan Jacob AU - Brožek, Josef PY - 1970 PB - Nieuwkoop : De Graaf, DB - UniCat KW - Reaction time. UR - https://www.unicat.be/uniCat?func=search&query=sysid:127655135 AB - ER -