000 00262nam a2200109Ia 4500
008 160710s1956 xx 000 0 und d
100 _aYARWOOD,J.
245 _aHIGH VACUUM TECHNIQUES
260 _aLONDON
_bCHAPMAN & HALL
_c1956
300 _a208
942 _2ddc
_cB
999 _c23693
_d23693