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(*FREEZING
24
(*FROST HEAVE
10
(*GEOGRAPHY
1
(*GEOLOGIC AGE DETERMINATION
2
(*GEOPHYSICS
1
(*GLACIERS
59
(*GRAIN SIZE
1
(*GREAT LAKES
2
(*GREENLAND
6
(*GROUND EFFECT MACHINES
1
(*GUIDED MISSILES
1
(*HAIL
1
(*HARBORS
1
(*HEAT TRANSFER
1
(*HEATING
1
(*HYDROLOGY
5
(*ICE
161
(*ICE ISLANDS
8
(*ICE PREVENTION
2
(*ICEBREAKERS
4
(*INTERNAL FRICTION
1
(*IONS
1
(*ISLANDS
1
(*Ice
2
(*Ice prevention
1
(*Icebergs
1
(*LAKES
6
(*LANDING FIELDS
32
(*LIGHT
1
(*LOADS(FORCES)
1
(*LOGISTICS
1
(*Lakes
1
(*MAPPING
5
(*MAPS
2
(*MARINE BIOLOGY
1
(*MARINE GEOPHYSICS
2
(*MARINE TRANSPORTATION
1
(*MEASURING INSTRUMENTS
1
(*MECHANICAL PROPERTIES
1
(*MECHANICAL WAVES
1
(*MELTING
1
(*MERCHANT VESSELS
1
(*METEOROLOGICAL PHENOMENA
1
(*MICROMETEOROLOGY
1
(*MICROWAVE FREQUENCY
1
(*MILITARY FACILITIES
1
(*MONTANA
1
(*MONTMORILLONITE
1
(*MOUNTAINS
3
(*NAVAL RESEARCH
1
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