TY - BOOK ID - 137127354 TI - The construction and utility of three indexes of intellectual achievement : an intellectual-development (ID) index, a socio-intellectual-status (SIS) index, a differential-intellectual-development (DID) index. US children and youths, 6-17 years. PY - 1977 SN - 0840601069 PB - Hyattsville Department of health, education and welfare DB - UniCat KW - Children KW - Intelligence testing UR - https://www.unicat.be/uniCat?func=search&query=sysid:137127354 AB - ER -