Association RDF
pages:- American Studies Association
- American Vacuum Society
- American Water Resources Association (AWRA)
- American Water Works Association (AWWA)
- American Wind Engineering Association (AWEA)
- American Women in Science
- American Women Society
- Anasco Basket Association, Inc.
- Animal Behavior Society
- Arizona Society of Electron Microscopy and Microbeam Analysis
- Army Engineer Association (AEA)
- Ash Fall Impacts Working Group (IAVCEI)
- Asociacion Alumni UPRM
- Asociacion de Futuros Maestros
- Asociacion de Colegiales Evangelicos
- Asociación de Escritores de Mérida (AEM)
- Asociación de Ex alumnos del R.U.M
- Asociacion de Maestros de Puerto Rico
- Asociacion de Maestros de Puerto Rico.
- Asociación de Supervisión y Desarrollo Curricular (ASCD) – EU
- Asociación de Supervisión y Desarrollo Curricular (ASCD) – PR
- Asociacion Estudiantil de PR, Health Occupation Student of America (HOSA). Departamento de Educacion de PR, Programa de Educacion Tecnica y Vocacional, Division de Ciencias de la Salud.
- Asociacion Para la Supervision y Desarrollo del Curriculo, Capitulo de Puerto Rico (PR, ASCD).
- Association for Computing Machinery (ACM)
- Association for Curricular Development
- Association for Education in Journalism and Mass Communication (AEJMC)
- Association for Practical and Professional Ethics (APPE)
- Association for Puerto Ricans in Science and Engineering
- Association for Research in Otolaryngology
- Association for Supervision and Curriculum Development (ASCD)