Which of the following theories was rejected by Schumpeter

"A man who did not do body labour had no right to eat" is based on the concept of 

The pillars of Periyar's Socio-economic philosophy are

Ambedkar's idea of state socialism is based on the philosophy of 

"The problem of the Rupee : Its origin and its solution" - was written by

Net National Product (NNP) is equal to