000 00411nam a2200193Ia 4500
008 140520s9999||||xx |||||||||||||| ||und||
082 _a503
082 _bE.C.G.
245 _aHow Things Work
260 _aIllinois
260 _bPublication & Information Directorate (Csir)
260 _c1990
300 _a320
300 _bHB
300 _c9X11
350 _a0
365 _b252
365 _dRuppes
999 _c61838
_d61838