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Elementary Order - Mendeleev's Periodic System
  • PDF
  • English
  • Year: 1976
  • Author: I. Petryanov, D. Trifonov
Elementary Order: Mendeleev’s Periodic System (From scientists)
  • PDF
  • English
  • Year: 1984
  • Author: I. V. Petryanov, D. N. Trifonov
Chemical Elements - How They Were Discovered
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  • English
  • Year: 1985
  • Author: D.N. Trifonov, V D. Trifonov
107 povestiri despre chimie
  • DOCX
  • Romanian
  • Author: L. VLASOV, D. TRIFONOV
Quimica recreativa
  • EPUB
  • Spanish
  • Author: L. Vlasov & D. Trifonov
Quimica recreativa
  • EPUB
  • Spanish
  • Year: 1940
  • Author: L. Vlasov & D. Trifonov
Quimica Recreativa
  • PDF
  • Spanish
  • Author: Vlasov L Y Trifonov D
La casa del malecón
  • EPUB
  • Spanish
  • Year: 1980
  • Author: Yuri Trifonov
Tom udarꞑik. Ic̡әt ꞩkolaьn velәdc̡ьs̡jaslь ʙukvar
  • PDF
  • Komi
  • Year: 1932
  • Author: A. F. Trifonov
Super-radiance : multiatomic coherent emission
  • PDF
  • English
  • Year: 2018
  • Author: Benedict, Mihaly G.; Ermolaev, A. M., Malyshev, V. A.; Sokolov, I. V.; Trifonov, E. D.
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