congresses
(
13
)
agriculture
(
12
)
forests and forestry
(
11
)
periodicals
(
7
)
analysis
(
6
)
optical measurements
(
6
)
analyse
(
5
)
china
(
5
)
géologie des dépôts meubles/géomorphologie
(
5
)
measurement
(
5
)
optoelectronic devices
(
5
)
paleontology
(
5
)
paléontologie
(
5
)
surficial geology/geomorphology
(
5
)
congélation du sol
(
4
)
engineering
(
4
)
food
(
4
)
freezing ground
(
4
)
glace fossile
(
4
)
ground ice
(
4
)
ground temperatures
(
4
)
laser interferometers
(
4
)
mackenzie valley
(
4
)
norman wells
(
4
)
northwest territories
(
4
)
pergélisol
(
4
)
permafrost
(
4
)
physical measurements
(
4
)
technology
(
4
)
températures au sol
(
4
)