Purchase Requisition report

HI Experts,

I am making Purschase Requisition (PR) report. User enters PR no. (EBAN-BANFN) and in output i want to show Details of PR, Sales transfer order (STO) datails by PR refrenes and Delivery details by STO refreance. I get PR details and STO details in EBAN table. But I am unable to get Delivery details with refrence to STO. Is there any table where I find this and have link with EBAN. Its urgent. Thanks alot.

Khan