Lappert M.F. (1972). Main group elements: Hydrogen and groups I-IV. Butterworths.
Čikaški stil citiranjaLappert M.F. Main Group Elements: Hydrogen and Groups I-IV. London: Butterworths, 1972.
MLA način citiranjaLappert M.F. Main Group Elements: Hydrogen and Groups I-IV. Butterworths, 1972.
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