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acyloin condensation arsphenamine dermatitis broadcasting control room copper(ii) iodate D365 hemp-core wire rope index beam Kratochvil clasp lamellar membrane learning streak minority culture paradoxes of Zeno Parinaud syndrome phyllosticta ipomoeae-reptantis Scandinavian Mts. sectional density ship biogenic environment Socialist People's Libyan Arab Jamahiriya weight constancy wood flour