How to go back last page

Is there a smart way to go back last page in Angular 2?

Something like

this._router.navigate(LASTPAGE);


For example, page C has a Go Back button,

• 
  Page A -> Page C, click it, back to page A.
  
  
• 
  Page B -> Page C, click it, back to page B.
  

Does router have this history information?

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