For 15 years his agency has specialized in sports marketing.

These agencies specialized in a particular activity of the whole communication process.

Today, the agency specializes in science and gives 650 photographers a job.

The agency specializes in public health and social marketing.

These agencies specialize in water management, water treatment and the environment.

Two agencies specializing in interactive advertising and services are being acquired.

Four acquisitions are being made of agencies specializing in advertising, Internet services and public relations.

Many private agencies specialize in placing home health aides, for a fee.

The agency specializes in social media marketing, multicultural advertising and broadcast production.

Many agencies specialize in a particular field of expertise.