00289nam a2200121Ia 4500008004100000041000800041100001700049245002600066250000800092260005100100300000800151365000800159231011s9999    xx            000 0 und d  aeng  aDave Deeksha  aEnvironmental Studies  a1st  bCengage Learning India Pvt.Ltd New Delhic2010  a303  b140