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Lua i Stíl Chicago (17ú heag.)Groenendijk, Hendericus Anthonius. Differential Susceptibility Studies of Some Weak Ferromagnets. Bleiswijk: NKB Offset B.V., 1981.
Lua MLA (8ú heag.)Groenendijk, Hendericus Anthonius. Differential Susceptibility Studies of Some Weak Ferromagnets. NKB Offset B.V., 1981.
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