Mori, Roberto, Authority patterns and political performance in Puerto Rico a case study of congruence theory Roberto Mori. - Princeton, N.J. Princeton University 1978. - vi, 363 p. Photocopy of typescript. Ann Arbor, Michigan, University Microfilms, 1978. Thesis [Ph.D.] Princeton University. Bibliography : P. 351-363. Subjects--Geographic Terms: Puerto Rico--Politics and government.