Huan jing jing ji xue gai lun
By: Gan Zeguang, Yang Wenhan, Li Bing'an zhu bian
Edition: Di 1 ban
Publisher: Xi bei gong ye da xue chu ban she
Published: 1987
Place of publication: Xi'an Shi
Language: chi
Number of pages: 356
Subjects: Environmental policy; Environmental protection; Nature; Effect of human beings on