000 00426cam a2200181ua 4500
020 _c22.60
041 _aeng
_h
082 _a621.381 542
_bROD/PH
100 _aRodda, S .
245 _aPhoto electric multipliers /
_cS Rodda.
_hTextual Documents
250 _a1 /
_b.
260 _aLondon :
_bMcDonald ,
_c1953.
300 _a180 ; .
365 _a22.60
504 _a
942 _cBK
999 _c264039
_d264039