00286nam a2200109 a 450000500170000002000150001708200170003210000210004924500330007026000550010330000180015820251203110108.0  a0883855100  a515.9,HAHb_  aHahn, Liang-shin  aComplex numbers and geometry  aUSAbThe mathematical Association of Americac1994  ax,192p.c22cm