MBM 12: young protoplanetary discs at high galactic latitude G. Meeus, A. Juhász, Th. Henning, J. Bouwman, C. Chen, W. Lawson, D. Apai, I. Pascucci and A. Sicilia-Aguilar A&A, 497 2 (2009) 379-392 Published online: 24 February 2009 DOI: 10.1051/0004-6361/200811490