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UDC 6/60 applied sciences in general, inventions and discoveries.
by Universal Decimal Classification.;
Year: 1979., Callno: 025.45 [Q] UNI
Book
UDC 5/50 exact sciences in general, nature study, conservation, environmental sciences.
by Universal Decimal Classification.;
Year: 1971., Callno: 025.45
Book
Abridged English edition / prepared by British Standards Institution.
by Universal Decimal Classification.;
Year: 1961., Callno: 025.45 UNI [Q]
Book
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