Yearbook of International Organizations, 1995-1996

Yearbook of international organizations, 1986/87. Volume 1. Organization descriptions and index / edited by Union of International Associations

Yearbook of international organizations, 1984/85. Volume 1. Organization descriptions and index / edited by Union of International Associations

Yearbook of international organizations, 1981

Yearbook international organizations : the encyclopedic dictionary of international organizations : their officers, their abbreviations / Union of international organizations

Year book de obstetricia y ginecología : 1980 en españl / [a cura di] Roy M. Pitkin, Frank J. Zlatnik

Yawar Mayu : sociedades terratenientes serranas, 1879-1910 / Nelson Manrique

Yawar fiesta

Yauyos : una aventura evangelizadora en los Andes peruanos / Samuel Valero

Los yaruros del Río Capanaparo / Vincenzo Petrullo ; [traducción, Angelina Lemmo B., Rafael Salas Jiménez ; nota preliminar, Rafael Salas Jiménez].