ISBN 10: 7116086897 ISBN 13: 9787116086890
Seller: liu xing, Nanjing, JS, China
US$ 52.42
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Add to basketpaperback. Condition: New. Paperback. Pub Date: 2014-01-01 Pages: 180 Language: Chinese Publisher: Geological Publishing House gem identification is based on the Jiangxi College of Applied Technology national backbone projects Vocational Colleges - gem identification and processing technology professional building programs prepared at the request. using the add project-oriented task-driven Writing system. focus on teaching school. learning to do organic convergence. it is to meet the vocational colleges gem gem identif.