Hajela, T. N. <br/><br/>
Co-operation: principles, problems and practice 

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 - Delhi  Konark Publishers pvt ltd.  2000 
 - xvi, 779p.   
<br/><br/>   
<br/><br/><label>ISBN: </label>81-220-0352-4 
<br/><br/><label>ISSN: </label>
<br/><br/><label>Subjects--Index Terms: </label>Co-Operation 
<br/><br/><label>Dewey Class. No.: </label>334