000 00314nam a2200121Ia 4500
008 220201s1950 xx 000 0 eng d
041 _aENG
100 _aSEARS, FRANCIS WESTON
245 0 _aMECHANICS HEAT AND SOUND
260 _aLONDON
_bTHAMES AND HUDSON PUBLISHING COMPANY
_c1950
300 _a564
942 _2ddc
999 _c49898
_d49898