Kathryn Johnston
Kathryn Johnston
Kathryn Johnston
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Abundance<br />
variations<br />
within<br />
stellar halos<br />
e.g M31 -<br />
Ferguson, Ibata,<br />
Irwin, Chapman,<br />
Lewis....<br />
(see also Guhathakurta;<br />
Brown et al; Mouchine et<br />
al...)