TY - BOOK ED - Centro de Estudios Puertorriqueños, Hunter College. TI - Sources for the study of Puerto Rican migration - 1879-1930 PY - 1982/// CY - New York PB - Centro de Estudios Puertorriqueños, Hunter College of the City University of New York KW - Labor KW - Puerto Rico KW - History KW - Sources KW - Local KW - Migrant labor KW - Labor mobility KW - Emigration and immigration KW - Population N1 - English or Spanish; "Movement of people entering and leaving Puerto Rico, 1909 to 1940": p. 222; Includes bibliographical references ER -