The modern concept of ecosystem services can be found in the late 19th century.

The very idea that you can "love your job" is a modern concept.

Before the modern concept of a manifold there were several important results.

He also introduces a general modern concept for a function.

The modern concept of wellness did not, however, become popular until the 1970s.

"I thought gravity was not considered a force in the modern concepts."

The modern concept is that we go to see plays.

The more modern concept was that you can't take the risk of a loss.

The modern concept and understanding of family offices was developed in the 19th century.

Here the modern concept of a cage's quality is presented.