select distinct substring(name,1,1) from stamps ,printsize_master,np_master where year(stamps.issue_date)=1979 and month(issue_date)=7 and np_master.np_code=stamps.np_code and np_master.np='P' and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='3.55 X 2.5' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1979 >> month >> July >> Currency >> P >> Print Size >> 3.55 X 2.5 >> Alpha >> E >>