compiled by the editors of Hydraulics & Pneumatics. by the editors of Hydraulics and Pneumatics. compiled by the editor of the railway gazette. compiled by the editors of the Communist. compiled by the editors of Super-8 filmaker magazine. compiled by the editor of "Textile Mercury". compiled by the editors of Rubber World. compiled by the editor of "Textile Mercury and Argus". compiled by the Office of Public Affairs. compiled by the editorial staff of Compressed Air and Hydraulics.