A fair use statement regarding the full text of the request

Your requested [人文地理学上的重大发现——评叶大年等著《城市对称分布与中国城市化趋势》] is currently limited to Institute of Geochemistry,Chinese Academy of Sciences internal sharing.

To solicit author authorization, you need to provide the following information: name, organization, personal e-mail, reason for request. The information you provide will be reviewed and you are committed to the truth of the information provided. The personal information you provide will be protected according to law.