Zi ran-- she hui huan jing yu pin kun wei ji yan jiu
Subtitle: yi Gansu Sheng wei li
By: Ding Wenguang, Chen Fahu, Nan Zhongren zhu
Edition: Di 1 ban
Publisher: Ke xue chu ban she
Published: 2008
Place of publication: Beijing
Language: chi
Number of pages: 161
ISBN-13: 9787030219688
Subjects: Environmental conditions; Social conditions; Poverty
Notes: Includes bibliographical references (p. 155-161).