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paperback. Condition: New. Paperback. Pub Date: 2015-10-01 Pages: 117 Language: Chinese Publisher: China Environmental Press construction workers vocational skills training textbook series: masonry work (Senior Engineering Technician) is based on national occupational skills standards for senior theoretical knowledge and skill requirements for masonry work requirements. in accordance with the principles of job training needed to prepare. including masonry work construction machinery; masonry masonry; other masonry work.