Night - Therapy term (CTAA)
Noctis - Night - Medicine
Nocturnal - Therapy term (CTAA)
Ascor Flyservice AS - Norway - ICAO designator (FAAC)
National Oceanographic Center - Marine science (MSC)
National Oceanographic Council (NADA)
National Offshore Council (EA)
National Olympic Committee (NADA)
National Online Circuit - Defunct (EA)
National Opportunity Camps for the Pre-Teen Child (EA)
Natural Organic Carbon
Naval Oceanographic Command (SAUS)
Naval Operations Center (NVT)
Navy Officer's Classification
Network Operation Center - Bell System
Network Operations Center - Internet (NETL)
Network Operations Control - NASA (KSC)
New Orleans Consortium - Library network
Nippon Oil Company - Fuels and lubricants
Noah's Boats, Saint George, SC - Manufacturer code for watercraft hull identification number (USCG)
Nominal Operating Cell - Photovoltaic energy systems
Nonionic Organic Compound - Organic chemistry
Non-Ionic Organic Contaminant - Environmental chemistry
Normally Open Contact - Switch (IAA)
Norris Communications Corp. - Vancouver Stock Exchange symbol
Northrop Corp. - NYSE symbol (SPSG)
Northrop Grumman - NYSE symbol
Northrop Grumman Corp. - NYSE symbol (SAG)
Northwest Ohio Consortium - Library network
Norwegian Government Office of Culture - Record label
Notation of Content - Aerospace
Not-Carry (SAUS)
Notice of Cancellation (AAGC)
Notice of Change (MCD)
Notice of Commencement (EPA)
Notice of Construction (EEVL)
Notice of Contents - Indexing
Not Otherwise Classified
Not Otherwise Coded (GFGA)
Nuclear Operations Center (MCD)
Nuclear Ordnance Commission - Military (AFIT)
Nuk - Language code (ETLW)
Number of Children (SAUS)
Numerical Optimisation Centre - British
Nursing Outcomes Classification (SAUS)
Nuttall Ornithological Club (EA)
University of North Carolina, Chapel Hill, Chapel Hill, NC - OCLC symbol (OCLC)
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