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ISBN 10: 7502046712ISBN 13: 9787502046712
Da: liu xing, Nanjing JiangSu, JS, Cina
Libro
paperback. Condizione: New. Pub Date: 2014-12-01 Pages: 82 Language: Chinese Publisher: Coal Industry Press flotation coal industry workers to identify specific types of vocational skills training in the practical operation of recommended textbooks to technical grade standards Workers People's Republic of China (coal industry) as the basis. and with reference to the coal industry Occupational Skill Testing Center organized the compilation of the coal industry to identify specific types of vocational skills training mate.