select distinct substring(name,1,1) from stamps ,color_master where year(stamps.issue_date)=1972 and month(issue_date)=10 and color_master.color_code=stamps.color_code and color_master.color='Blue Grey and Black' order by substring(name,1,1)
StampsIndia
Issue Date >> year >> 1972 >> month >> October >> Color >> Blue Grey and Black >> Alpha >> B >>