000 00318nam a2200133Ia 4500
008 210901s1994 xx 000 0 eng d
082 _a512.865 KHA
100 _aKhanna, V.K.
245 0 _aLattices and boolean algebras
260 _aDelhi
_bVikas
_c1994
300 _a148
650 _aMathematics
942 _2ddc
_cBK
999 _c20547
_d20547