بالون هيليوم. كم بالون هيليوم تحتاج لرفع نفسك؟

Proceedings of the Royal Society of London New York: Van Nostrand Reinhold
Ackerman MJ, Maitland G 1975 "Isotopic Composition and Abundance of Interstellar Neutral Helium Based on Direct Measurements"

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Journal of the American Chemical Society.

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, Uranium and Helium in the Panhandle Gas Field Texas, and Adjacent Areas,Geological Survey Professional Paper 454-G, Washington:US Government Printing Office, 1964• Boca Raton FL : CRC Press
هيليوم
It seems to indicate a new substance, which they propose to call Helium
بالون
"Composition of Gas from a Well at Dexter, Kan"
"Impaired exercise ventilatory mechanics with the self-contained breathing apparatus are improved with heliox" Fusion Technology Institute of the University of Wisconsin-Madison
Aeronautics and Astronautics: An American Chronology of Science and Technology in the Exploration of Space, 1915—1960 Makhijani, Arjun; Gurney, Kevin 1995

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"Where is the Earth's Radiogenic Helium? "Helium concentration in the Earth's lower atmosphere".

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هيليوم
Lunar and Planetary Science XXXVIII
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The Encyclopedia of the Chemical Elements
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