00521nam a2200181 a 450000500170000002000150001708200130003210000060004511000470005124500340009826000360013230000210016869000310018996400160022099700190023699900170025595200670027220251203110635.0  a8171812694  a500bEXP  d_  aChattopadhyay, Deepanwita and Vas, Gratian  aExperiments in Science; vol.1  aNew DelhibLearners Pressc1995  a315p.c24 cm. HB  aScience-Simple Experiments  bcdefg_  a113804 LIBSC C  c97323d97323  00104070aPUbPUd2005-08-03g500.00l0o500 EXPp113804yBK