Since the 1980s there has been a large amount of research into safety culture.

You're talking about a huge amount of research that goes behind it.

But with a certain amount of research, you can find out who they are, and start making phone calls.

However, she said, only a limited amount of formal research has been done on the question.

It wouldn't take any great amount of research to find out about them.

You would have to do a huge amount of research to test all other possible variables here.

A significant amount of research in the area has taken place since the 1980s.

In addition, the amount of research on partnerships is growing.

He has also done a substantial amount of research on this issue.

He wrote all the novels after doing a great amount of research.