ISBN 9787563518227 books & textbook
mechanical drawing problem sets (non- Machine class)
SI CHUAN DA XUE GONG CHENG ZHI TU JIAO YAN SHI BIAN WANG MEI 、 XIONG YAN ZHU BIAN
Beijing University of Posts and Press /1991T Paperback
isbn-10: 7563518223 / isbn-13: 9787563518227
