TY - RPRT TI - Reactions and Surface Transformations of a Bone-Bioactive Material in a Simulated Microgravity Environment AU - Radin, S. AU - Ducheyne, P. AU - Ayyaswamy, P. S. PY - 1999 UR - https://ntrs.nasa.gov/citations/19990040270 ID - 19990040270 ER -