Privatization 523 Private collections 421 Private investigators 369 History 334 Public-private sector cooperation 322 Private libraries 287 Art collections 271 more ... Privateering 174 Art 146 Private schools 130 Private security services 113 Women private investigators 110 Economic policy 106 Finance 96 Privatization in education 83 Rare books 82 Private equity 81 Law and legislation 76 Government policy 74 Murder 74 Investigation 72 Economic aspects 70 Contracting out 66 Catalogs, Booksellers' 62 Library 61 Social aspects 57 Education 56 Economic conditions 54 Private military companies 54 Private universities and colleges 54 less ...