Compendium of Environment Statistics 

 - New  Delhi Govt of India      1999 
 - "xiv, 213p"  cm. 
<br/><br/> Appendix: p 215-228 
<br/><br/><label>Standard No.: </label>194319 
<br/><br/><label>Source: </label> Reference Collections 
<br/><br/><label>Dewey Class. No.: </label>"U:(G:55)s, N9"