00401nam a2200121Ia 4500008004100000020001500041100004200056245006700098260005200165300002300217650002700240650001200267120527s9999    xx            000 0 und d  a8171417566  aYadav, P. R. and Mishra, Shubhrata R.  aEnvironmental biologyc/by P. R. Yadav and Shubhrata R. Mishra  bDiscovery Publishing House :aNew Delhi,c2004.  a[x], 302p. :bill.  aEnvironmental sciences  aEcology