This study was sponsored by the National Science Foundation (NSF) and the National Aeronautics and Space Administration under NSF Grant ENG-9111333, awarded to the International Technology Research Institute (JTEC/WTEC Program) at Loyola College in Maryland. The Government has certain rights in this material. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation, the United States government, the authors' parent institutions, or Loyola College.

Published: July 1993; WTEC Hyper-Librarian