00288nam a2200133Ia 4500020000900000082001000009100002100019245002700040250000600067260005800073300000800131500000900139650000600148  aNULL  a530.8  aRamaswamy, G. S. 0aSI Units A Source Book  a-  aBombaybTata McGraw - Hill Publishing Company Limited  a109  a2040  a-