വിശ്വമാനവികതയുടെ പ്രവാചകൻ text Thiruvananthapuram Prabhatham Printing & Publishing 2014 5th Ed monographic 154p P K Gopalakrishnan Sreenarayana Guru Political Thinker Kerala Kerala Anti Caste Movements 894.8128 GOP/S 9788177052107