00421nam a2200145 a 4500001001200000005001700012008004100029040001500070041000800085100001700093245009200110250001200202260004500214700001600259NDCL004013620261027121742.0241016s2009    ii    ||||||||||| |eng d   aNDCLcNDCL0 aeng1 aJ. N. Sharma10aPartial Differential Equations for Engineers and ScientistscJ. N. Sharma & Kehar Singh  a2nd ed.  aNew DelhibNarosa Publishing Housec20091 aKehar Singh