00253nam a2200109Ia 4500008004100000041001200041082001100053100001700064245005000081260000600131650000600137221030s9999    xx            000 0 und d  aEnglish  a105.23  aV. K. Khanna 0aLattices and Boolen Algebrascby V. K. Khanna  c0  aB