00317nam a2200121Ia 4500008004100000020001800041040003800059100001100097245001400108250000800122260005200130300001300182220101s9999    xx            000 0 und d  a9788182209015  cJayakar Knowledge Resource Centre  aHarsha 0aRatnavali  a1st  bGlobal vision publishing houseaNew Delhic2017  ax,80p p.