00510nam a2200169 a 450000500170000008200150001710000060003211000360003824500620007426000490013630000190018569000120020496400230021699700120023999900170025195200720026820251203091148.0  a500,PROb_  d_  aIndian National Science Academy  aProceedings of the Indian National Science Academy;vol.47  aDelhibIndian National Science Academyc1981  axl,736p.c22cm  aScience  bENGLISHcdefg_  a31402 C  c32197d32197  00104070aPUbPUd1999-03-25l0o500,PRO _p31402q2006-08-09yBK