9787504589293 - 煤矿开采方法 张登明,孙健新 中国劳动社会保障出版社 9787504589293 (1 risultati)
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Da: liu xing, Nanjing, JS, Cinaliu xing
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paperback. Condizione: New. Language:Chinese.Pages Number: 237 Publisher: China's labor Pub. Date :2011-04-01 version 1. Coal mining method for the national vocational education planning materials. according to the vocational and technical institutions coal technology class professional teaching practice of Human Resources and S…ocial Security teaching office to compile. Coal mining methods. The main contents include Ida development. preparation methods. coal face mining technology. coal face production technology manage.
