Association RDF
pages:- American Society for Cell Biology (ASCB)
- American Society for Histocompatibility and Immunogenetics
- American Society for Microbiologists
- American Society for Microbiology
- American Society for Microbiology
- American Society for Microbiology (ASM)
- American Society for Microbiology (ASM) and SACNAS
- American Society for Virology and American Association for the Advancement of Science
- American Society of Agricultural and Biological Engineers
- American Society of Animal
- American Society of Chemistry (ACS)
- American Society of Clinical Pathologists (ASCP)
- American Society of Consultant Pharmacists, ASCP
- American Society of Health System Pharmacists
- American Society of Health-System Pharmacists
- American Society of Microbiologists (ASM)
- American Society of Pharmaceutical Sciences (AAPS)
- American Society of Pharmacognosy
- American Society of Pharmacognosy (ASP)
- American Society of Tropical Medicine & Hygiene
- American Veterinary Medical Association
- Amnesty International Puerto Rico Chapter
- APA - The American Philosophical Association
- APDA, Asociación de Personal Docente de Arecibo
- APPU, Asociación Puertorriqueña de Profesores Universitarios
- APS: Executive Committee Physics and Society Forum
- APS: Executive Committee Physics and Society Forum
- Aquatic Therapy and Rehab Institute (ATRI)
- ASCAP
- Asociación Colombiana de Inmunología