select distinct substring(name,1,1) from stamps ,color_master where color_master.color_code=stamps.color_code and color_master.color='Yellow Green and Blue Black' and year(stamps.issue_date)=1970 and stamps.serial_no='0612' order by substring(name,1,1)
IndianPost
Color >> Yellow Green and Blue Black >> Issue Date >> year >> 1970 >> Serial Number >> 0612 >> Alpha >> U >>