00268    a2200109   450000500170000002000180001708400160003510000270005124500340007826000320011230000140014420260417150712.0  a9789819732692  2CCa B27     aMANORANJAN KUMAR SINGH  aConcepts of fuzzy mathematics  bSpringer,c2024,aSingapore  aXXVII+656