00449nam a22001697a 450000500170000001000140001702000260003103500140005703700090007108200180008010000190009824500360011725000060015326000380015927000570019730000250025420250310171837.0  aENG-14472  a9789390095278c795.00  aEN-127604  bDBAD  a358.41094121  aKalyani, Vikas  aVision Sagar/cby Vikas Kalyani  a1  aNew Delhi bPentagon Press c2021  a206, Peacock Lane, Shahpur Jat, bNew Delhi e110049  axx,186p. c24cm(Hb)