How to put more than 1 int. table contents into a single table

Hi ABAP Gurus,

Looking for not making redundant in the code , sceario is like this ,

1. extracting contents from diff tables like mara, marc, mard ......etc into corresponding int tables..

2. Need to write common subroutine to pull these data and put it into single table or field smbol ..

so I am aimimg to call a common subroutine after each table extraction into corresponding int table...

Appreciate your advise , if there is best way to do ..

Kind Regards

Rama