00494nam a2200193Ia 4500003000400000005001700004008004100021020002200062040000700084041000800091082002100099100002500120245006400145250000600209260003900215300001400254365001300268650001900281OSt20230408132406.0210423s2016    xx            000 0 und d  a978-93-272-3909-6  cAL  aeng  a333.7 223bPURE  aPURKAYASTHA (Gautam)  aEnvironmental economics: theory problems and solutions Ed 3  a3  aLudhianabKalyani Publishersc2016  ax,424bPB  b225cINR  aLand Economics