00299nam a2200109 a 450000500170000008200150001710000060003211000310003824500560006926000480012530000160017320251203091145.0  a500,PROb_  d_  aIndian Academy of Sciences  aProceeding of the Indian academy of sciences;vol.38  aBangalorebIndian Academy of Sciencesc1954  a545p.c22cm