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Science 1 November 1996, 722. Are diffuse interstellar bands due to
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Helmut Scheffler: Interstellare Materie.
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14671 Joachim Wambsgans'': Gravitationslinsen. Spektrum 2001/5, 44-53.

13387 Martin Zwaan: Primordial rain or galactic pollution?
Science 5 May 2000, 822-823. High-velocity hydrogen clouds, their origin and
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