00437pab a2200145 454500008004000000100002000040245006900060260000900129300001400138362001200152650003300164650004700197650003000244773001700274180718b2004   xxu||||| |||| 00| 0 eng d  aSingh, Joginder  aEconomic cost of environmental degradation in Punjab agriculture  c2004  ap.475-81.  aOct-Dec  aAgriculture - India - Punjab  aEnvironmental degradation - India - Punjab  aEnvironmental degradation  aProductivity