periodicals
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5
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congresses
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4
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technology
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4
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abstracts
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2
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communist countries
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2
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food
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2
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freshwater
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2
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geophysics
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2
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government publications
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2
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indexes
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2
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international geophysical year, 1957-1958
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2
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radiation
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2
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radiation preservation of food
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2
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2
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science
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2
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transistors
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2
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translations from russian
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2
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alloys
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1
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aluminum
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1
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1
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analysis
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1
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animaux et plantes nuisibles des jardins
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1
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1
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brackish
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1
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cellulose acetate
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1
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