Topic
Field notes
40
Russia
40
Northern fur seal
34
Zoologists
32
Beringa
30
Mednyy
30
ostrov
30
Black-and-white photographs
28
Sealing
18
Seals (Animals)
16
Kamchatka
12
Glinka
10
Ostrov
10
Nikol’skoye
8
Alaska
6
Bering Sea controversy
6
Economic conditions
6
Fisheries
6
Illustrations
6
Tyuleniy
6
Diary
4
International Fur-Seal Commission
4
Mys
4
Ornithologists
4
Ornithology
4
Palata
4
Bering Sea
2
Current
2
Ichthyology
2
Kuril Islands
2
NikolÕskoye
2
OtherKuril'skiye Ostrova
2
Raykoke
2
Sakhalin
2
United States Fish Commission
2
Ushishir
2
Vulkan
2
Zoologist
2