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Analysis of particles that fell on a residential area near the Chempark industrial estate in Leverkusen contained no dioxins or polychlorinated biphenyls, environmental protection official Ulrich Quass told a news briefing.

And if you're doubting whether you can handle it, here's a video of a superb parallel bars display by 86-year-old Johanna Quass.

Oh! be not quass of nika; Thy seahoose turn on me; For thou must but hyas cumtux, That I hyas tikkee thee!

Quass′ine, Quass′ite, the bitter principle of quassia-wood, the Bitter-wood of the West Indies.

Henri was an enormous feeder, and, wherever we stopped, he disappeared for a moment, and came out with a loaf of bread in his hand and his mustache covered with the froth of quass, a Russian small beer.