00293nam a2200121Ia 4500008004100000082000800041100001500049245002400064250000800088260005500096300000800151650001200159191201s1989    xx            000 0 und d  a530  aSINGHAL,RL 0aSolid State Physics  a6th  aN. DelhibKedar Nath Ram Nath and Co. Meerutc1989  a622  aApplied