$ sudo apt-get update
$ sudo apt-get install libgraflib1-gfortran 

libgraflib1-gfortran is installed in your system.

Make ensure the libgraflib1-gfortran package were installed using the commands given below,

$ sudo dpkg-query -l | grep libgraflib1-gfortran *

You will get with libgraflib1-gfortran package name, version, architecture and description in a table

libgraflib1-gfortran package basic information: