मिडियानि बेबादि बिहोमाफोरखौ जागायजेननायाव नायबिजिरनो 1968 मायथायाव भियेटनाम दावहानि समाव लन्दनाव खालामनाय जादोंमोन ।
The initial survey of such roles of media has been done in 1968 during the Vietnam war in London .