"Schwarze." . . "Weiterbildung." . . "Werkmeister." . . "Aufseher." . . . . "Staat Südafrika." . . . . . . . . . . . . . . . "The role, function and training of Black first-line supervisors in some decentralized industries"@en . "The role, function and training of Black first-line supervisors in some decentralized industries" . "The role, function and training of black first-line supervisors in some decentralized industries" . . .