1999 Flight mechanics symposium [microform] / edited by John P. Lynch ; proceedings of a conference sponsored and held at NASA Goddard Space Flight Center, Greenbelt, Maryland, May 18-20, 1999 ([NASA conference publication] ; NASA/CP-1999-209235)
1999 Flight mechanics symposium [microform] / edited by John P. Lynch ; proceedings of a conference sponsored and held at NASA Goddard Space Flight Center, Greenbelt, Maryland, May 18-20, 1999