00275nam a2200109 a 450000500170000008200130001710000160003024500510004626000340009730000170013163000170014820251202164207.0  a334bHAJ  aHajela T.N.  aPrinciples, problems & practice of cooperation  aAgrabShiva Lal Agarwalc1986  a748 p.b23cm  aCo-operation