Books information you have requested:

TITLE:	To See the Unseen.
AUTHOR:	Butrica, Andrew J.
PublicationInformation:	Washington, D.C.: National Aeronautics and Space Administration, NASA History Office, 1996.
Copies:	1
Language:	English
Status:	In Office Use Only
Location:	Historical Office
Subject:	Radar
Annotation:	This is billed as a history of planetary radar astronomy.