000 00245nam a2200109Ia 4500
008 160710s1951 xx 000 0 und d
100 _aDYSON ,F
245 _aPRINCIPLE S OF MECHANISM
260 _bO.U.P
_c1951
300 _a368
942 _2ddc
_cB
999 _c15015
_d15015