Aerial surveillance sensing including obscured and underground object detection : 4, 6 April 1994, Orlando, Florida /Publisher: Bellingham, Wash. : SPIE,
Date: c1994. This title can be found in 1 Iowa libraries.
Underground and obscured object imaging and detection : 15-16 April 1993, Orlando, Florida /Publisher: Bellingham, Wash. : SPIE--the International Society for Optical Engineering,
Date: c1993. This title can be found in 2 Iowa libraries.
Fourth International Conference on Ground Penetrating Radar : June 8-13, 1992, Rovaniemi, Finland /Publisher: Espoo : Geologian tutkimuskeskus,
Date: 1992. This title can be found in 1 Iowa libraries.
Third International Conference on Ground Penetrating Radar abstracts of the technical meeting, Lakewood, Colorado, USA, May 14-18, 1990 /Format: [microform] :
Publisher: [Denver, CO] : U.S. Geological Survey :
Date: 1990] This title can be found in 1 Iowa libraries.
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