000 00340nam a2200121Ia 4500
008 221111s1980 xxu 000 0 eng d
020 _a9781609735869
100 _aHagler, Gine
245 0 _aStep By Step Experiments With Simple Machines
260 _aUSA
_bThe Child World
_c1980
700 _aOstroon, Bob
_eIllustrator
942 _2z
_cDBK
_01
999 _c34400
_d34400