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CJL Home LANL Preprints In the Journals Recent Preprints Talks Crete II Proceedings RG Home Page All Science Groups	Selected Presentations by Charles J. Lada   PPT versions (or PDF if available) can be found in sites linked to names. Vacancies in the Heavens: Caroline Herschel and the Discovery of Dark Nebulae AAS San Diego CA January 2005 Dusty Dark Nebulae and the Origin of Stellar Masses Colloquium Penn State University, April 2009
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