00494nam a2200181   450000500170000000700040001700800040002102000150002502000150004004000090005505000230006410000190008724500570010626000400016330000250020350000500022865000340027820150417124727.0000000  a0137634269  a013763434x  aUOEL  aQA331.5b.W43 1991  aWebb, J. R. L.  aFunctions of several real variables /cJ. R. L. Webb  aNew York ;bEllis Horwood ,cc1991.  axiii, 289 p. :bill.  aIncludes bibliographical references and index  aReal - variablesxMathematics