ISBN: 9787502579371 - 通风安全技术 (1 Ergebnisse)

paperback. Zustand: New. Paperback. Pub Date: 2008 Pages: 158 Publisher: Chemical Industry Press in order to further popularize and raise the level of production safety of mining personnel skills and management personnel. reduce accidents. and to ensure the physical health of employees and the state property from loss. mine safety and technical education universal textbook: ventilation safety technology according to the needs and characteristics of the preparation of the safety education. Mine safety technology educa.…