The Encyclopedia Americana, Količina 23Americana Corporation, 1972 |
Iz vsebine knjige
Zadetki 1–3 od 87
Stran 124
... IMPORTANT RADIOACTIVE SUBSTANCES Radioactive Substance Half life Uranium - 238 4.5 billion years Uranium - 235 0.7 billion years Uses Source material for making plutonium . Fissionable isotope used for atomic energy and atomic bombs ...
... IMPORTANT RADIOACTIVE SUBSTANCES Radioactive Substance Half life Uranium - 238 4.5 billion years Uranium - 235 0.7 billion years Uses Source material for making plutonium . Fissionable isotope used for atomic energy and atomic bombs ...
Stran 713
... important fisheries . Pop . ( 1965 ) 184,204 . ROSTOPCHIN , ru - stup - chen ' , COUNT Fëdor Vasilievich , Russian soldier , politician , and writer : b . Liwny , Orel , Russia , March 23 , 1763 ; d . Moscow , Jan. 30 , 1826. He entered ...
... important fisheries . Pop . ( 1965 ) 184,204 . ROSTOPCHIN , ru - stup - chen ' , COUNT Fëdor Vasilievich , Russian soldier , politician , and writer : b . Liwny , Orel , Russia , March 23 , 1763 ; d . Moscow , Jan. 30 , 1826. He entered ...
Stran 779
... important . Rural schools with spatial separation and independent thinking of rural people lend them- selves to such trial and error . In rural schools is found the best teaching , as well as much that is probably the worst . It is ...
... important . Rural schools with spatial separation and independent thinking of rural people lend them- selves to such trial and error . In rural schools is found the best teaching , as well as much that is probably the worst . It is ...
Druge izdaje - Prikaži vse
The Encyclopedia Americana: A Library of Universal Knowledge, Količina 23 Prikaz kratkega opisa - 1936 |
Pogosti izrazi in povedi
19th century active aircraft alpha particles alpha rays American antenna atomic became British broadcasting called carrier wave century Christian College countries developed early elected electrons energy England English established Europe feet FM broadcasting France French frequency German Hertz important inches Indian industrial Italy John kilohertz known Lake land later London megahertz ment miles modulation North operation organized Paris particles produced programs province published pulse pump Punjab puppet quasars Quebec Quebec City Quetzalcoatl Quincy quinine radar radiation radio radioactive radium railroads railway rainfall range rays reading received Red Cross refrigeration region religion religious Rembrandt Renaissance River Roman ships signal species square miles stations tion train transmitted United University usually velocity vols wave World War II York