000 00231pam a2200109a 44500
082 _a530
_bL725P
100 _aLittle, N.C.
245 1 _aPHYSICS
260 _a
_bD.C. Heath And Company
_c1953
964 _gCIRC
997 _a39956 C
999 _c409199
_d409199