It means, "of businesses" or "businesses'."
(as a noun) advertising == publicidad
Of which or of what.
what does tengo la clase de espanol en la primera hora mean in English
"Pizza de verduras" means "vegetable pizza" in English.
"De quien" means "from whom"
administration of business (Business Administration)
Empresas Públicas de Medellín was created in 1955.
Empresas Públicas de Medellín's motto is 'Estamos ahí'.
Escola de Administração de Empresas de São Paulo was created in 1954.
Escola Brasileira de Administração Pública e de Empresas was created in 1952.
(as a noun) advertising == publicidad
De tu means: of your in English.
The indefinite article "de" in Spanish is analogous to the indefinite article "of" in English.
Empresas Polar was created in 1941.
Empresas ICA was created in 1947.
Carlos Rodrigo Illero has written: 'Curso basico de administracion y direccion de empresas'
Of which or of what.