00274nam a2200121Ia 4500008004100000082000800041082001000049100001700059245002400076260001500100260002800115260000900143230118s9999||||xx |||||||||||||| ||und||  a530  bMAT/T  ambmathachan 0atextbook of physics  aeranakulam  bvidyarthi mithram press  c1996