Epstein, Barbara I.
Factors related to mechanical aptitude in Blacks. - Pretoria : Human Sciences Research Council, 1985. - vii, 124 p. - Report PERS ; 380 .
Bibliography: p. 86-124.
9780796902900
Mechanical ability.
Blacks--Intelligence levels.
Blacks--South Africa.
153.9462
Factors related to mechanical aptitude in Blacks. - Pretoria : Human Sciences Research Council, 1985. - vii, 124 p. - Report PERS ; 380 .
Bibliography: p. 86-124.
9780796902900
Mechanical ability.
Blacks--Intelligence levels.
Blacks--South Africa.
153.9462