000 00252nam a2200109Ia 4500
008 160710s1950 xx 000 0 und d
100 _aTHORNLEY ,G.C
245 _aPOWER AND PROGRESS
260 _bLONGMAN GREEN
_c1950
300 _a126
942 _2ddc
_cB
999 _c12636
_d12636