00686cam a2200229 a 45000010005000000030008000050050017000130080041000300200017000710200024000880350018001120400025001300410008001550820022001631000043001852450055002282600064002833000026003475040020003735040026003936500037004196676BD-RjUL20211208234306.0140111s1975    enk      b    001 0 eng    a0521205832 :  a0521098939 (pbk. :)  a(BD-RjUL)6717  aLCbengcLCdBD-RjUL  aeng04a515.353bCOP 19751 aCopson, E. T.q(Edward Thomas),d1901-10aPartial differential equations /cby E. T. Copson.  aCambridge :aNew York :bCambridge University Press,c1975.  avii, 280 p. ;c24 cm.  aIncludes index.  aBibliography: p. 277. 0aDifferential equations, Partial.