000 00343pam a2200133a 44500
082 _aBTS
_bMONO 2293
100 _aTien,P K
245 1 _aFOCUSING OF A LONG CYLINDRICAL ELECTRON STREAM
260 _a
_b
_c1954
300 _a8
500 _aBound With Bts Mono 2279-2292,2294-2299 Lack No.2292,2296
964 _gCIRC
997 _aTR19582 C
999 _c403112
_d403112