select distinct substring(name,1,1) from stamps ,color_master where year(stamps.issue_date)=1979 and month(issue_date)=7 and color_master.color_code=stamps.color_code and color_master.color='Green and Golden brown (Superimposed)' order by substring(name,1,1)
IndianPost
Issue Date >> year >> 1979 >> month >> July >> Color >> Green and Golden brown (Superimposed) >> Alpha >> P >>