@book{186609,
	author = {R. Spangenberg , Karl},
	title = {Vacuum Tubes},
	publisher = {McGraw-Hill Book Company, Inc},
	year = {1948},
	address = {New York},
	edition = {International student ed},
	note = {Introductions (Page-1) Basic Tubes Types (Page-5) Electrons and Ions (Page-19) Electronic Emission Ions (Page-23) Determination of Potential Fields (Page-58) Laws of Electron Motions (Page-97) The Electrostatic Field of triode (Page-125) Space Charge Effects (Page-168) Triode Characteristics (Page-201) Tetrodes (Page-238) Pentodes (Page-266) Noise in Vacuum Tubes (Page-298) Electrostatic Electron Optics (Page-328) Magnetic Lenses (Page-394) Cathode Ray Tubes (Page-412) Ultra High Frequency Effects in Conventional Tubes (Page-475) Velocity Modulated Tubes or Klystrons (Page-527) Magnetron Oscillators (Page-621) Photoelectric Tubes (Page-675) Special Tubes (Page-701) High Vacuum Practice (Page-747) }
}