University of Calicut, Kozhikode, Available Volumes: NULL, Year: 2004 Centre for Development Studies, Available Volumes: NULL, Year: 2004 University of Kerala, Thiruvanathapuram, Available Volumes: NULL, Year: 2013 Kannur University, Available Volumes: NULL, Year: 2004 University of Kerala, Thiruvanathapuram, Available Volumes: Vol.1-11,1969-1980;Vol.14-30,1983-1999
