Los mártires de Chicago y el 1o de mayo de 1913
By: Vladimir de la Cruz.
Publisher: Editorial Costa Rica
Published: 1985
Place of publication: San José
Language: spa
Number of pages: 185
Subjects: May Day (Labor holiday) -- United States -- History.; May Day (Labor holiday) -- Costa Rica.; Working class -- Costa Rica -- History.
Notes: Includes bibliographies.
Paper originally presented at the Segundo Congreso de la Asociación Mundial de Centros de Estudios Históricos y Sociales del Movimiento Obrero (AMCEHSMO), held in Mexico City, Oct. 15-19, 1979, under the title: El Primero de mayo de 1913.
Annexes (p. 89-185) includes articles, speeches, etc. written by various authors.