Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Knowledge Economy National Income Accounting
The concept of 'Marginal Man' was propounded by
1
Robert E. Park
2
Robert Redifield
3
Louis Wirth
4
More than one of the above
5
None of the above