What are the distinguishing features between Abraham Maslow's hierarchy of needs model and Philip Selznick's institutional approach as natural systems perspective theories?

The distinguishing features between Abraham Maslow's hierarchy of needs model and Philip Selznick's institutional approach as natural systems perspective theories are (i) Maslow's needs theory focuses on the progressive stages of man's needs from the most basic physiological need to the most advanced one of self-actualization; whereas Selznick's institutional theory is focused on the organization and how rules and norms are established within it. (ii) Maslow's needs theory focuses on people whereas Selznick's institutional theory focuses on organizational systems.