sprawdzony sposób

Some papers oppose the proven methods to fix the situation.

He used only proven methods for constructing each part of the computer.

"Business is a proven method of solving their problems in a sustainable way."

If anyone has a proven method and evidence of success I would be interested in purchasing the service.

I can't offer you a proven method but it's an interesting notion.

But the Government still wants to cultivate a strong economy, following its own proven methods.

It would serve notice to every dictator that violence is a proven method to get things done.

Moreover, if my advice and the proven methods in this book are followed, certainly no one will ever know.

"Phonics is already a proven method to learn to read," she said.

Mentoring is a proven method to ensure students complete their education.