Association RDF
pages:- National Hispanic Science Network
- National Institutes of Health (NIH) Funding Organization Institute
- National Institutes of Health - National Heart, Lung, and Blood Institute (NIH-NHLBI) Funding Organization Institute
- National Institutes of Health - Research Supplements for Underrepresented Minorities (NIH) Funding Organization Institute
- National Society of Profesional Engineers (NSPE)
- National System of Researchers at Mexico
- New York Academy of Science
- New York Academy of Sciences
- North American Catalysis Society
- Omega Rho
- Operations Research Society
- Optical Society of America
- Organizational Committee for the Congress of Scientific Research, Inter American University, PR
- Organizing Committee for the Peter Elbow Symposium on Writing
- Pacific Northwest American Studies Association
- Parnassus Patria de Artistas
- Peace Action Wisconsin
- Pen Club of Puerto Rico
- Penn State Alumni Association
- Personnel Committee
- Pharmaceutical Industry Association
- Phi Alpha Delta
- Phi Delta Kappa
- Phi Kappa Phi
- Phi Kappa Phi Honor Society - Chapter 105 - UPRM
- Phi Lambda Theta
- PHI Lambda Upsilon - National Honorary Chemical Society
- Political Science Students Association
- Popular and American Culture Association
- PR Earthquake Safety Commission