TY - RPRT TI - Distributed coma sources and the CH4/CO ratio in Comet Halley AU - Boice, D. C. AU - Huebner, W. F. AU - Sablik, M. J. AU - Konno, I. PY - 1990 UR - https://ntrs.nasa.gov/citations/19910026430 ID - 19910026430 ER -