Cambridge, England, UK: Cambridge University Press | Journal of Research in Science Teaching |
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"The helium abundance of Jupiter from Voyager" | "Laboratory simulation of Jupiter's Great Red Spot" |
Museum of Natural History, Oregon | "A model for the evolution of strontium and lead isotopes in a dynamic earth" |
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"Heterogeneous Hadean hafnium: evidence of continental crust at 4 | China: De Groot, Jan Jakob Maria 1912 |
International Earth Rotation and Reference Systems Service IERS | "Group 29: Multi-axes symmetric, both soft and straight-lined, closed signs with crossing lines" |
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Contributions to Mineralogy and Petrology | "An expanded set of brown dwarf and very low mass star models" |