000 00300nam a2200121Ia 4500
100 _aVrana, Ralph S.
942 _cBK
654 _a
245 _aJunior high school science activities
260 _aWest Nyack , N.Y.
_bParker Publishing Company
_c1969
082 _a375.5
300 _bHb
_c25.5
_ax,214
999 _c400907
_d400907
041 _aeng