Verdejo Carrión, Ada L. creator Medina Diaz, María del R. auth. text bibliography pr San Juan , Puerto Rico Experts Consultants, Inc. c2009 5ta.ed. monographic spa 560 p. ill. 25 cm. specialized Ada L. Verdejo Carrión ,María del R. Medina Díaz . Includes bibliographical references and index. Grading and marking Students Educational surveys Students Rating of Puerto Rico Methodology Educational tests and measurements 9780982319109 990916 20160527202503.0 291953