Earth & Environmental Sciences
ground penetrating radar
76%
antenna
69%
void
68%
comparative study
65%
stone
20%
ringing
17%
survey design
15%
comparison
10%
material
4%
test
4%
analysis
3%
Arts & Humanities
Historical Buildings
97%
Voids
80%
Deterioration
75%
Comparative Study
65%
Conservation
29%
Business & Economics
Deterioration
75%
Comparative Study
67%
Survey Design
44%
Data Sources
35%
Conservation
29%
Engineering & Materials Science
Ground penetrating radar systems
100%
Antennas
46%
Deterioration
21%
Arsenals
18%
Antenna grounds
13%
Conservation
11%
Radar
9%
Physics & Astronomy
voids
63%
antennas
63%
deterioration
25%
rocks
23%
ground penetrating radar
19%
conservation
11%
Chemical Compounds
Block Like Crystal
49%
Reflection
28%
Application
11%
Surface
5%