nieuwe handboek der radiotechniek / door A. Dominicus van den Berg Reference data for radio engineers Reference data for radio engineers electrical and mechanical engineering regulations (by command of the army council). telecommunications Drive and Monitor Unit, S.S.B., no. 1 : technical handbook - technical description electrical and mechanical engineering regulations (by command of the army council). telecommunications Equipment, radar, A.A., no. 4, MK. 6 (M.Z.P.I.) : technical handbook - field and base repairs