000 002630000a22001210004500
080 _a53
_bA4
100 _aAllen, H.S.
245 _aA textbook of practical physics
260 _aLondon
_bMacmillan
_c1928
300 _a696p.
700 _aMoore, H.
942 _cBK
999 _c51708
_d51708