Social ScientistMonthly Journal of the Indian School of Social SciencesVOLUME 5 JULY NUMBER 12 1977CONTENTSB Jorge Rodriguez 3 Puerto Rico: 51st State or National Liberation?Subhas Bhattacharya 13 The Indigo Revolt of BengalA V Jose 24 Origins of Agricultural Trade Unionism in KeralaA V Balu 44 Marxian Political Economy, Part TenCOMMUNICATION Karl Schoer 58 Falling Tendency of Piofit Rate NOTE Kamal Sarkar 62 Toiling for the Jute Barons BOOK REVIEW P Radhakrishnan 76 The Decline of Nayar Dominance81 INDEX to Social Scientist 49 to 60 Articles, communication, note and book review express the views of the authors arid not necessarily of the editors or of the Indian School of Social Sciences. >