'No supervisor can supervise directly the work of more than five or at the most, six subordinates whose work interlocks'. This statement regarding the span of control was made by:

In administrative terminology, 'Hierarchy' refers to:

In a sound democratic administration, which two key principles must always go hand in hand?

Who stated, 'Coordination is the first principle of organization and includes within itself all other principles which are subordinate to it and through which it operates'?