00257nam a22000977a 4500008004100000050002200041100002000063245003800083260002900121300000900150161208b        xxu||||| |||| 00| 0 eng d  aLF 4033b.D4 1958  aDenis, Valentin  aUniversite Catholique De Louvain   aLondon:bLouvain,c1958.  a247p