Psi and its variant :

Bibliographic Details
Institution:International Institute of Social History
Format: TEXT
Published: Institute of Marxism-Leninism-Mao Zedong Thought, Chinese Academy of Social Sciences, 1982.
Beijing :
Subjects:
Online Access:http://hdl.handle.net/10622/5F794406-034F-49BC-93AA-B15DA94FD51D