TY - GEN TI - Photoelectric tubes / U1 - 621.38157452,SOM PY - 1951/// CY - London PB - Methuen KW - Telecommunication Engineering N1 - Historical Introduction (Page-1), Theories Of Photoelectric Emission (Page-3), Photoelectric Cathodes (Page-18), Matching Of Light Sources And Photo Cathodes (Page-49), Vacuum Photocells (Page-62), Gasfilled Photocells (Page-66), Multiplier Photocells (Page-79), Applications Of Photocells (Page-90) ER -