00000nam a2200000 a 4500 20251202164318.0 3764317361 511. DEL Delgado, A Goldschmidt Groups and Graphs New Results and Methods Germany Birkhauser verlag Basel 1985 244 p. 22 cm. _ Mathamatics _ 8372 LIBSC C 7164 7164 0 0 0 0 PU PU 2000-03-13 0 511. DEL 8372 BK