TY - BOOK ID - 126495699 TI - Selected references on test construction mental test theory and statistics : 1929-1949 AU - Goheen, Howard W. AU - Kavruck, Samuel AU - Scott, John F. PY - 1950 PB - Washington (D.C.): Government printing office, DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:126495699 AB - ER -