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D
2
History (General) and history of Europe
2
Medicine
R
2
northeast siberia
cancer of the esophagus
1
cancer of the reproductive organs
1
cancer of the stomach
1
epidemics
1
folk remedies
1
incidence
1
kiibes
1
lung cancer
1
morbidity dynamics over 100 years
1
otosut
1
siberia
1
smallpox
1
the history of smallpox
1
vaccination against smallpox
1
yakutia
1
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