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ISBN 10: 7532261247ISBN 13: 9787532261246
Librería: liu xing, Nanjing JiangSu, JS, China
Libro
Hardcover. Condición: New. Hardcover Pages Number: 51 Language: Chinese. History of our country there are many people who dare to dare. has made great achievements in inventions. Eastern Han Dynasty a great scientist Zhang Heng. is prominent among them one. Zhang Heng is a writer who spent a decade and wrote the immortal literary masterpiece. two Jing Fu. In astronomy. digital. mechanical and other disciplines. the achievements of excellence. Armillary sphere. he created the seismograph. Waiting wind instrument. the hi.