Centre (1) Paris (1) Land mines (1) Mark, German (1) Notions (Philosophy) (1) Technical literature (1) Scientific bureaus (1) Production (Economic theory) (1) New business enterprises (1) Narration (Rhetoric) (1) Mines and mineral resources (1) Mines (Military explosives) (1) Mass production (1) Hand (1) Goal (Psychology) (1) Experience (1) Creation (1) Concord (1) Concepts (1) Communication of technical information (1) Communication in science (1) Cabinet system (1) Research (1) Materials (1) Transmission (1) Teachings (1) First performances (1) Experiments (1) Nuevas empresas (1) Manos (1)