00439nam a22001457a 4500008004100000040005500041080001500096100001500111245005800126260004500184300001000229650001200239653002600251700001600277230609b        |||||||| |||| 00| 0 eng d  aNational Science LibrarycNational Science Library  a626.87bN1  aGupta, N L  aChallenge of wastelands utilization issues and themes  aJaipur: bAcademic Publishers,    c1991  a256p.  aScience  aEnvironmental science  aMaroo, R L