TY - RPRT TI - A gravity field comparison and analysis to support Magellan navigation AU - Kronschnabl, G. R. AU - Mcnamee, J. B. AU - Engelhardt, D. B. AU - Graat, E. J. PY - 1992 UR - https://ntrs.nasa.gov/citations/19920060679 ID - 19920060679 ER -