00398nam a22001337a 4500008004100000020001800041040005500059080002200114100001700136245003700153260004700190300001500237650001200252230605b        |||||||| |||| 00| 0 eng d  a81-224-0463-4  aNational Science LibrarycNational Science Library  a614.7:615.07 bN3  aKhopkar, S M  aEnvironmental pollution analysis  aNew Delhi: bWiley Eastern Limited, c1993  axii, 190p.  aScience