Dui Li Er Yuan has written:
'Lan tian yi meng'
Fu Yuan Huang has written: 'You er ji bing quan shu'
Qiao Hai has written: 'Er ren dui hua'
Hailin Qin has written: 'Er yuan cai zheng yan hua yu jing ji zeng zhang'
Renfa Ren has written: 'Yuan Ren Renfa er ma tu' -- subject(s): Horses in art, +Horses in art
Zhilang Pan has written: 'Zhong gong dui er tong zheng zhi she hui hua zhi yan jiu'
Fuqing Guo has written: 'Gong si quan li yu quan li er yuan pei zhi lun' -- subject(s): Corporation law
Er Ke has written: 'You ai you hen'
Futai Yao has written: 'Zhongguo qi che mian dui Zhongguo hang tian er lian hong' -- subject(s): Automobile industry and trade, Astronautics, Aerospace engineering
Geng Xia has written: 'Zhongguo cheng xiang er yuan jing ji jie gou zhuan huan yan jiu' -- subject(s): Economic policy, Economic conditions, HC427.92
Er Ji has written: 'Xi feng san ji ='
Shuige has written: 'Qing er'
Cheng Guan Er has written: 'Industrial structure and competitive strategy'