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Стр. 1186
... convenient classroom source of radioactive isotopes for use in simple experiments to demonstrate basic principles of nucleonics ... experiments which can be performed by high school students with a minimum of laboratory equipment .
... convenient classroom source of radioactive isotopes for use in simple experiments to demonstrate basic principles of nucleonics ... experiments which can be performed by high school students with a minimum of laboratory equipment .
Стр. 1237
4 ) announced his intention to " prove " in the experiments that marihuana really did not do anything ; the other ( No. ... The placebo Experimental Sessions cigarette consisted of placebo material , tobacco filler , and mint leaves for ...
4 ) announced his intention to " prove " in the experiments that marihuana really did not do anything ; the other ( No. ... The placebo Experimental Sessions cigarette consisted of placebo material , tobacco filler , and mint leaves for ...
Стр. 1439
New Knowledge from Space Rocket Measurements sphere probe , conducted jointly by scientists at NASA's Goddard Space Flight Experiments Because of these limitations of satel- Center and the Space Physics Research The source of most of ...
New Knowledge from Space Rocket Measurements sphere probe , conducted jointly by scientists at NASA's Goddard Space Flight Experiments Because of these limitations of satel- Center and the Space Physics Research The source of most of ...
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activity addition American analysis animals appears applications Arranged Association behavior biological cells changes chemical complete concentration containing culture Department determined discussion effects Engineering experiments field function given glucose human illus important increase indicated individual Institute interest International laboratory lead less major material means measured mechanisms ment method Michigan natural Notes observed obtained occur organic pattern percent performance period physical plants Pleistocene position possible prepared present Press problems production range ratio recent recorded References region reported response sample Science scientific scientists similar smoke solution species structure subjects suggested Table temperature tion United University volume York