المؤلفون: Guo, Yan-Ping, Ren, Yi, Wang, Fang, Xue, Qiang, Zhang, Jianguo
الإتاحة: http://www.dmg-lib.org/dmglib/handler?docum=22677009
المؤلفون: Zhang, Jianguo, Song, Haiyan
الإتاحة: http://www.dmg-lib.org/dmglib/handler?docum=20421009
URL الوصول: https://www.europeana.eu/item/2020801/dmglib_handler_docum_22677009?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCa
URL الوصول: https://www.europeana.eu/item/2020801/dmglib_handler_docum_20421009?utm_source=api&utm_medium=api&utm_campaign=YuvuWBeCa