"United States. Army" . . . . "Handbooks and manuals"@en . . "Organizational maintenance manual communications relay group, guided missile system, truck mounted, AN/MRC-137"@en . . . . . . "Organizational maintenance manual : communications relay group, guided missile system, truck mounted, AN/MRC-137"@en . . . . "Communications relay group, guided missile system, truck mounted, AN/MRC-137"@en . . . . . .