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EVALUATION OF DATABASE CA CONDENSATES COMPARED WITH CHEMICAL TITLES
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[3]
HANSEN IB, 1969, KEM TEOLLISUUS, V26, P997
[4]
IDC SYSTEM FOR CHEMICAL DOCUMENTATION
[J].
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[5]
RETRIEVAL EFFICIENCY FROM TITLES AND COST OF INDEXING
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[6]
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1971, DATA CONTENT SPECIFI
[9]
1972, SUBJECT COVERAGE ARR