National Science Foundation 
National Strike Force 
National Sanitation Foundation 
National Science Foundation's 
not sufficient funds 
Network Specific Facilities 
National Sleep Foundation 
Non-Sufficient Funds 
Nuclear Science Foundation 
Name Search Facility 
National Science Fundation 
National Security Forum 
National Service Framework 
Navy Stock Fund 
no significant findings 
Non-Standard Facilities 
Nuclear Storage Facility 
Insufficient Funds 
Named-State File 
NASA Safety Finding 
National Sanitation Federation 
National Schizophrenia Fellowship 
National Schizophrenia Foundation 
National Science Foun 
National Security Foundation 
National Service Framework for Childre… 
National Skills Fund 
National Space Foundation 
National Standard Format 
Natural Science Foundation