Misra R 
Ecology workbook 
Misra R 
 - New  Delhi Scientific Publishers          2013 
 - 244p. ill.  cm. 
 Appendix A-E 227-240p.; Index 241-244p. 
9788172338053 (hbk) 
194819 
 48, 03/11/2015, Deepika book agency  Textual 
 Succession
 Water cycle
Nitrogen cycle
G:5, Q3 Carb