00334nam a2200145Ia 4500003000500000008004100005020000900046040000900055041001200064082002300076100002000099245004500119260000900164650001500173NDCL180829s9999||||ii |||||||||||||| ||eng||  a9717  aNDCL  aEnglish  a181.43 DS216th ed  aDatta, Srilekha 4aThe ontology of negationcSrilekha Datta  c1991  aPhilosophy