ISBN: 9787504588210 - 制齿工（中级 高级）机械行业特有职业国家职业技能培训鉴定教材 (1 Ergebnisse)

paperback. Zustand: New. Paperback. Pages Number: 198 Language: Chinese. Publisher: China Labor and Social Security Publishing House Pub. Date :2011-02-01. Gear System Engineering (Intermediate. Advanced) by the Occupational Skill Testing Machine Guidance Center. Department of Human Resources and Social Security jointly organized by the Office of the preparation of teaching materials. the machinery industry-specific vocational training for the National Occupational Skills Identification of recommended counseling book.…