Public Administration:
https://en.wikipedia.org/wiki/Public_administration
Nature and Scope of Public Administration:
http://www.legalservicesindia.com/article/2311/Nature-And-Scope-of-Public-Administration.html
Public and Private Administration
Difference
https://keydifferences.com/difference-between-public-and-private-administration.html
New Public Administration
https://en.wikipedia.org/wiki/New_Public_Administration.
New Public Management
https://en.wikipedia.org/wiki/New_Public_Management