000			nam a22 7a 4500
999			_c102491 _d102490
005			20191004120619.0
008			190917b ||||| |||| 00| 0 eng d
080			_a5:37.091.313 _bSIV/J
100			_aSivadas,S _919818
245			_aJoy of science
260			_aKottayam _bAscend publications _c2008
300			_a399p.
653			_aScience-Programmed instruction
942			_cBK