Speedometers, tachometers, and recorders : Ordnance maintenance - USA Voorschrift, Technical Manual, 9-1829A Radio receiving set AN/FRR-12 - USA Voorschrift, Technical Manual, 11-896 Operations against airborne attack guerilla action and infiltration. - USA Voorschrift Field Manual 31-15 Military Publications. Index of Supply Manuals Signal Corps - USA Voorschrift Pamphlet 310-21 Stereoscopic Range and Height Finding - USA Voorschrift, Technical Manual, 4-250