ISBN 10 : 7550919917 ISBN 13 : 9787550919914
Vendeur : liu xing, Nanjing JiangSu, JS, Chine
paperback. Etat : New. Paperback. Pub Date: 2018-02-01 Pages: 238 Language: Chinese Publisher: the Yellow River water conservancy press the security officer job knowledge and professional skills (version 2) construction and municipal engineering construction site professional profession standard training materials to the construction and municipal engineering construction site professionals professional standards and safety personnel evaluation program. designed.