One of the main methods used is principal component analysis.

The following table shows an overview of the main methods used.

The main method the unions used to effect change was strike action.

They had all used vomiting as their main method of weight control.

The following are the main methods of dealing with hot money.

While growing up, sign language was the main method of communication in his home.

They had four main methods of agriculture that were quite successful.

What is the main method that people use to achieve social order?

The main method of play has rules as described below.

There are three main methods of dealing damage in the game.