Who was sent by the Madras government to Germany to study about the German rural credit co-operatives?

Joining to a co-operative society is 

Registration of the co-operative societies is

A co-operative super market supplies

Tamilnadu co-operative societies Act was passed in

The word co-operation derived from the 

Maximum membership in a co-operative society is

Consumers co-operation was first successful in

The Madras co-operative societies Act was passed in