Open loop gain and feedback factor

Hi everybody....

I want to find Open loop gain and feedback factor of the following circiut using ac eqivalent circuit.
Can any one help.....
Thanx...

Hi,

Do you have a larger diagram? That one is kind of hard to see the lettering.
Also, you might indicate where the circuit ground is located.
Also, are those two triangles amplifiers with input and output resistances as indicated?