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2. The composition of stony meteorites (VII): Observations on fractionation between the L and H chondrites;Ahrens;Earth Planet. Sci. Lett.,1970
3. Fraetionation of some abundant lithophile element ratios in chondrites;Ahrens,1969
4. The composition of stony meteorites III. Some inter-element relationships;Ahrens;Earth Planet. Sci. Lett.,1969
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