TY - RPRT TI - Circumprotostellar environments. 2: Envelopes, activity, and evolution AU - Moriarty-Schieven, G. H. AU - Wannier, P. G. AU - Keene, Jocelyn AU - Tamura, M. PY - 1994 UR - https://ntrs.nasa.gov/citations/19950037416 ID - 19950037416 ER -