00411nam a2200181Ia 4500003000400000005001700004006001900021007000300040008004100043024001000084037001200094040002000106041001300126082001200139100001900151245005000170260000900220OSt20220928142224.0a|||||r|||| 00| 0 ta220927b        |||||||| |||| 00| 0 eng d  a18748  cTextual  aSDCLcSDCLbeng  2engaeng  aB42, M4  aHerrera Ismael 0aBoundary methods b An algebraic theory.       c1984