Molecular line emission in HH54: a coherent view from near to far infrared T. Giannini, C. McCoey, B. Nisini, S. Cabrit, A. Caratti o Garatti, L. Calzoletti and D. R. Flower A&A, 459 3 (2006) 821-835 Published online: 12 September 2006 DOI: 10.1051/0004-6361:20065127