00354nam a2200157Ia 4500008004100000020000900041035000800050082001700058100001800075245002200093250000600115260005300121300000800174500000800182650000600190210723s9999||||xx |||||||||||||| ||und||  aNULL  a789  a330.156BHAN  aHansen, H. A. 2aA Guid To Keyness  a-  aNew YorkbMcGraw Hill International Book Company  a237  a308  a-