. "Trishul SAM" . . . . . . . . . "Defence Research and Development Organisation's" . . . . "Defense Research Development Organization" . . . . . . . . . . "Defence Research Development Organization" . . "30000" . . . . . . "Defence Research" . . "DRDO" . . "for Defence" . . "Defense Research and Development Organizations" . . . "Defence Research and Development Organisation (DRDO)" . "1958" . . . . . . . . . . . . "D.R.D.O." . "Defence Research & Development Organization" . "Defence Research and Development Organisation" . "surprise" . "Defence Research and Development Organisation" . "Defence Electronics Research Laboratory" . "List of DRDO laboratories" . . "Defence Research Development Organisation's (DRDO)" . "Defence Research and Development Organisation" . "Defense Research & Development Laboratory" . "Department of Defence Research and Development" . . . "Defence Research and Development Organisation (DRDO)." . . "DRDL" . "S.M.A.R.T." . . . . "1958" . "Defence Resarch & Development Organisation" . . . "Defence Research and Development Organization" . . "Defense Research and Development Organization" . . . . . "DRDO/DARE" . . . . . . . . "Defence Research & Development Organisation" . "Defence Research and Development" . . . .