MCGRAW-HILL <MHP> DIVESTS SOUTH AFRICAN UNIT McGraw-Hill Inc said it has sold its McGraw-Hill Book Co South Africa Pty Ltd subsidiary to a local management group for an undisclosed amount of cash and halted the sale of all products and services to South Africa. The company said the divestiture follows a resolution of its board in February that cited increased political and social unrest within South Africa and the refusal of the South African government to abolish the apartheid system.