ISBN 9787806089675 books & textbook
Science and Technology of Tianshui City, Chi (Lanzhou Province)
(TIAN SHUI SHI KE XUE JI SHU ZHI )BIAN XIE LING DAO XIAO ZU BIAN
Gansu Cultural Publishing House /1991-01-01 Hardcover
isbn-10: 7806089675 / isbn-13: 9787806089675
