00469nam a2200145Ia 4500008004100000020001800041082001500059100002200074245005300096260004500149300001500194942000700209952009000216999001700306190710s9999    xx            000 0 und d  a81-7629-181-1  a372.35 V19  aVaidya, Narendera 0aScience teaching in schools for the 21st century  aNew DelhibDeep & Deep Publcationsc1999  axxxiv, 503  cBK  00104070aRIEBPLbRIEBPLd2019-07-10l0o372.35 V19p64083r2019-07-10 00:00:00yBK  c31534d31534