select distinct substring(name,1,1) from stamps ,color_master,printsize_master,np_master where year(stamps.issue_date)=1952 and np_master.np_code=stamps.np_code and np_master.np='A' and printsize_master.printsize_code=stamps.printsize_code and printsize_master.printsize='1.6 X 0.9' and color_master.color_code=stamps.color_code and color_master.color='Blue' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1952 >> Currency >> A >> Print Size >> 1.6 X 0.9 >> Color >> Blue >> Alpha >> S >>