Title: Electro-optical equipment in mechanical handling and sorting
Subjects: Materials handling, Congresses, Electrooptical devices, Optoelectronic devices, Automatic machinery, Sorting devices, Automatic control, Dispositifs optoélectroniques, Congrès, Machines automatiques, Institution of Mechanical Engineers, London. Manipulative and Mechanical Handling Machinery Group. Postal Engineering Section, London Institution of Mechanical Engineers