Ramakrishnan, P. S. <br/><br/>
Ecology and sustainable development : working with knowledge systems / 
Ramakrishnan, P. S. 
 - New Delhi:  National Book Trust, India,  2004. 
 - xii, 217p.; 22cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>9788123752570 
<br/><br/><label>Dewey Class. No.: </label>577 RAM